美國簽證辦理敏感專業介紹

【美國留學網（https://abroad.hopetrip.com.hk/usa/） - 美國留學出國簽證】美國簽證解決敏感專業先容
 　　出國留學頻道小編為眾人先容美國簽證解決敏感專業先容，願望對出國留學的同窗有所贊助。想懂得更多留學出色內容，出國留學頻道為你具體解答。

　　解決美國簽證的時刻，針對有些敏感專業會受到拒簽的情形，那末所謂的敏感專業是指哪些專業呢?下面出國留學頻道小編就給眾人整頓一下美國簽證拒簽輕易產生的14個敏感專業。假如本身的專業或研討偏向和這些相幹，只管即便淡化,大概想好解釋和做好被check的生理預備了.

　　1. CONVENTIONAL MUNITIONS:

　　Technologies associated with warhead and other large caliber projectiles, reactive armor and

　　warhead defeat systems, fusing, and arming systems.

　　2. NUCLEAR TECHNOLOGY:

　　This section covers technologies associated with the production and use of nuclear material for both peaceful and military applications. Included are technologies for enrichment of fissile material, for reprocessing irradiated nuclear fuel to recover produced platinum, production of heavy water for moderator material, plutonium and tritium handling, as well as certain associated technologies related to high energy physics. It includes research and poser reactors, breeder and production reactors, fissile or special nuclear materials; uranium enrichment, including gaseous diffusion, centrifuge, aerodynamics, chemical, electromagnetic isotopic separation (EMIS) laser, isotopic separation (LIS); spent fuel reprocessing, plutonium, mixed oxide nuclear research, inertial confinement fusion (ICF), magnetic confinement fusion, plasma, nuclear fuel fabrication including mixed oxide (uranium-plutonium) fuels (MOX), heavy water production, tritium production and sue, electromagnetic pulse (EMP); hardening technology.

　　3. MISSILE/MISSILE TECHNOLOGY:

　　Technologies associated with air vehicles and missile systems. The technology needed to develop a satellite launch vehicle is virtually identical to that needed to build a ballistic missile. Technologies include rocket systems, ballistic missiles, space launch vehicles and sounding rockets and unmanned air equipment and reentry vehicles.

　　4. AIRCRAFT AND MISSILE PROPULSION AND VEHICULAR SYSTEMS:

　　The propulsion technologies included are associated with near-earth super and hypersonic flight propulsion systems for

　　aircraft and missiles. Many of these technologies are dual use. Technologies include liquid and solid rocket propulsion systems; missile propulsion and systems integration; individual rocket states or staging/separation mechanism; aerospace thermal and high-performance structures; propulsion systems test facilities.

　　5. NAVIGATION AND GUIDANCE CONTROL:

　　These capabilities directly determine the delivery accuracy and lethality of both unguided and guided weapons. The long-term costs to design, build and apply these technologies have been a limiting proliferation factor. Technologies include those associated with internal navigation systems, tracking and terminal homing devices; accelerometers, vehicle and flight control systems.

　　6. CHEMICAL AND BIOTECHNOLOGY ENGINEERING:

　　Of specific concern is the ability to develop, produce, and disseminate toxic chemicals, biological and toxin agents. The technologies that could be applied to produce chemical and biological agents are used widely by civilian research laboratories and industry; these technologies are relatively common in many countries. Advanced biotechnology has the potential to support biological weapons research. Look for technologies associated with bacteriology (especially pathogenic), mutagens, mycology, neurotoxins, reconbiant technology, toxins, venoms, virology, precursor chemicals, toxicological research, chemical production equipment.

　　7. REMOTE IMAGING AND RECONNAISSANCE:

　　Remote sensing technologies are inherently dual-use; technologies can be used for civilian imagery projects or for military reconnaissance efforts. Drones and remotely piloted vehicles enhance reconnaissance abilities. These are technologies associated with remote sensing satellites; imagery systems; high resolution cameras and optics; air vehicles; remotely-piloted vehicles, drones.

　　8. ADVANCED COMPUTER/MICROELECTRONIC TECHNOLOGY:

　　Advance computers and software play a useful (but not necessarily critical) role in the development and deployment of missiles and missile systems, and in the development and production of nuclear weapons. Advance computer capabilities are also used in over-the- horizon targeting, airborne early warning targeting, electronic countermeasures (ECM) processors. These technologies are associated with supercomputing, hybrid computing; speech processing/recognition systems; neural networks; data fusion; quantum wells, resonant tunneling; superconductivity; advance optoeletronics, acoustic wave devices, superconducting electron devices, flash discharge type x-ray systems; frequency synthesizers; microcomputer compensated crystal oscillators.

　　9. MATERIALS TECHNOLOGY:

　　The metallic, ceramic, and composite materials are primarily related to structural functions in aircraft, spacecraft, missiles, undersea vehicles, and propulsion devices. Polymers provide seals and sealants for containment of identified fluids and lubricants for various vehicles and devices. Selected specialty materials provide critical capabilities that exploit electromagnetic absorption, magnetic, or superconductivity characteristics.. These technologies are associated with advance metals and alloys; non-composite ceramic materials, ceramic, cermet, organic and carbon materials; polymeric materials; synthetic fluids; hot isostatic densifications; intermetallic; organometals; liquid and solid lubricant; magnetic metals and superconductive conductors.

　　10. INFORMATION SECURITY:

　　Technologies associated with cryptography and cryptographic systems to ensure secrecy for communications, video, data and related software.

　　11. LASERS AND DIRECTED ENERGY SYSTEMS TECHNOLOGY:

　　Lasers have critical military applications, including incorporation in guided ordnance such as laser guided bombs and ranging devices. Directed energy technologies are used to generate electromagnetic radiation or particle beams and to project that energy on a specific target. Kinetic energy technologies are those used to impart a high velocity to a mass and direct it to a target. Directed energy and kinetic energy technologies have potential utility in countering missiles and other applications. Look for technologies associated with atomic vapor laser isotope separation (AVLIS), molecular laser isotope separation (MLIS); high energy lasers (HEL), low energy lasers (LEL), semiconductor lasers, free electron lasers , directed energy (DE), kinetic energy (KE) systems, particle beam, beam rider, electromagnetic guns, optoelectronics, optical tracking, high energy density, high-speed pulse generation, pulsed power, hypersonic/hypervelocity, magnetohydronynamics.

　　12. SENSORS AND SENSOR TECHNOLOGY:

　　Sensors provide real-time information and data; the side with superior sensors has a considerable advantage. Marina acoustics is critical in anti- submarine warfare; gravity meters are essential for missile launch calibration. Look for technologies associated with marine acoustics, optical sensors, night-visions devices, image intensification devices; gravity meters; high speed photographic equipment; magnetometers.

　　13. MARINE TECHNOLOGY:

　　Marine technologies are often associated with submarines and other deep submersible vessels; propulsion systems designed for undersea use and navigation and quieting systems are associated with reducing detectability and enhancing operations survivability. Look for technologies connected with submarines and submersibles, undersea robots, marine propulsion systems; signature recognition; acoustic and non-acoustic detection; acoustic, ware, radar and magnetic signature reduction, magnetohydrodynamics; stirring engines.

　　14. ROBOTICS:

　　Technologies associated with artificial intelligence, automation, computer-controlled machine tools; pattern recognition technologies.

　　本文針對美國簽證拒簽輕易產生的14個敏感專業舉行了先容，須要解決美國簽證的同窗，可以經由過程本文懂得這些專業，看看本身的專業是不是包含在內，提早做好預備，防備拒簽的慘劇產生。