1. Mathematics: including axiom of choice (a set theory axiom formulated by German mathematician Ernst zermelo in 1904), alternating current, acoustic time difference curve (in porosity logging, acoustic time difference is curve data used to reflect lithology and rock structure, so AC is used to refer to this data, because acoustic waves can be written as acoustic waves), attenuation coefficient, etc.
2. Chemistry: It includes actinides (a highly radioactive metal element found in 1899, which exists in pitchblende or uranium-bearing substances and is formed by uranium decay), acetate, acetyl, acetoxy (a functional group in organic chemistry with the molecular formula of R-O-C=O-CH3) and azobis.
3. Biology: Adenylate cyclase is a kind of membrane integration protein, which can convert ATP into cAMP and cause cell signal reaction, and is an effector in G protein coupling system.
4, medicine: including the anterior chamber (refers to the cavity between the back of the cornea and the iris and lens. The anterior chamber is filled with colorless liquid (i.e. aqueous humor), acromioclavicular joint, anterior cruciate ligament, anal canal, before meals (doctor's prescription sometimes injects ac, indicating that the medicine should be taken before meals), adriamycin and cyclophosphamide (a chemotherapy scheme), allergic cough, etc.
5. Meteorology: It includes cumulus clouds (a medium-sized cloud with small volume, well-defined outline and great differences in thickness and shape, which is white when thin and dark gray when thick) and expected convection (used by the National Weather Service under the National Oceanic and Atmospheric Administration of the United States to refer to expected convection events).
The technical fields are as follows:
1. Electronic information: including system software, supporting software, middleware software, embedded software, computer-aided engineering management software, Chinese and multilingual processing software, graphic and image software, financial information software, geographic information system, e-commerce software, etc.
2. Biotechnology: including pharmaceutical biotechnology, traditional Chinese medicine, natural medicine, chemical medicine, new dosage form and preparation technology, medical device technology, light industry and chemical biotechnology, modern agricultural technology, etc.
3. Aerospace technology: including civil aircraft technology, air traffic control system, new generation civil aviation operation support system, satellite communication application system, satellite navigation application service system, etc.
4. New materials: including metal materials, inorganic nonmetallic materials, polymer materials, biomedical materials, fine chemicals, etc.
5. Service industry: including * * * technology, modern logistics, integrated circuits, business process outsourcing (BPO), supporting technologies for cultural and creative industries, public * * * services, technical consulting services, precision and complex mold design, biomedical technology and industrial design.
References:
AC (Technology)-Baidu Encyclopedia
High-tech field-Baidu encyclopedia