Process in which substances change their composition or structure to form new substances

A device used to initiate and control a nuclear reaction to produce energy; short for [[原子核反应堆|原子核反應堆|yuan2 zi3 he2 fan3 ying4 dui1]].

1. A process in physics or chemistry where the products of a reaction cause further reactions to occur, especially in nuclear fission or chemical kinetics; 2. A series of related events where one change triggers a sequence of subsequent changes.

A device used to initiate and control a nuclear fission or fusion reaction; nuclear pile

the amount of time that passes between a stimulus and the resulting response

a chemical or physical reaction that is self-sustaining through the repeated generation of reactive intermediates

(medical) An abnormal physical response caused by contact with a specific substance; also called [[过敏|過敏|guo4 min3]] or [[过敏反应|過敏反應|guo4 min3 fan3 ying4]]

a self-sustaining chemical or nuclear reaction in which the products of one step initiate further steps

a chemical equation used to represent a reaction

The process where atomic nuclei and particles interact to change the structure or state of the nucleus, often releasing particles or energy

the process in photosynthesis where light energy is converted into chemical energy; also known as a photoreaction

Process where two light atomic nuclei combine at extremely high temperatures and pressures to form a heavier nucleus, releasing massive amounts of energy; also known as [[聚变|聚變|ju4 bian4]] or [[核聚变|核聚變|he2 ju4 bian4]]

a chemical reaction that releases energy, usually in the form of heat

the change in thermal energy content that occurs during a chemical reaction

the reverse or backward part of a chemical or physical reaction; a counter-reaction or inverse response

A concise way to represent a chemical change, usually with reactants on the left and products on the right connected by an arrow or equals sign; same as [[化学方程式|化學方程式|hua4 xue2 fang1 cheng2 shi4]]

A biological or psychological reaction to internal or external environmental pressures or social factors; often shortened to [[应激|應激|ying4 ji1]]

An elite military unit with high mobility and advanced technology, trained to respond quickly to terrorist activities and emergencies.

a behavioral response that happens when a specific stimulus is present, after a period of training or learning

a device used to initiate and control a self-sustained nuclear chain reaction

Process in which particles interact with an atomic nucleus to change its state or structure, such as nuclear fission or fusion, often releasing significant energy. Also called [[核反应|核反應|he2 fan3 ying4]].

device used to initiate and control a self-sustained nuclear chain reaction

A device used to initiate and control a nuclear fission or fusion reaction in order to generate energy.

gas-cooled nuclear reactor

inflammatory response; inflammation

A device used to initiate and control a nuclear fusion reaction; also known as a thermal reactor.

a nuclear reactor designed to produce fissile material for weapons or fuel

skin or cutaneous reaction; cutireaction

an active or energetic response to something

fusion reaction; a nuclear process where atomic nuclei combine to form heavier nuclei

chemical process where multiple small molecules (monomers) bond together to form a large high-molecular-weight compound

an abnormal or excessive immune response to an antigen; hypersensitivity

light water reactor (LWR)

An abnormal reaction by the body when it comes into contact with an allergen; also referred to as [[过敏|過敏|guo4 min3]], [[过敏性反应|過敏性反應|guo4 min3 xing4 fan3 ying4]], or [[变态反应|變態反應|bian4 tai4 fan3 ying4]].

an abnormal reaction by the body when exposed to an allergen, such as sneezing, rashes, or anaphylaxis; also called [[过敏|過敏|guo4 min3]], [[过敏反应|過敏反應|guo4 min3 fan3 ying4]], or in Mainland China [[变态反应|變態反應|bian4 tai4 fan3 ying4]]

a nuclear reactor that uses heavy water as a neutron moderator and coolant

chain reaction of nuclear fission

chain reaction; variant form

altitude sickness or acute mountain sickness caused by lower levels of oxygen at high elevations

A chemical reaction that, under specific conditions, proceeds almost entirely in one direction toward the formation of products

Physical symptoms like dizziness, headache, nausea, and difficulty breathing caused by a lack of oxygen at high altitudes.

a chemical reaction in which an acid and a base react quantitatively with each other to produce water and a salt

a chemical reaction where two chemical species are joined together, typically with the aid of a metal catalyst

chemical reaction initiated by the absorption of energy in the form of light

The physiological reaction of an organism to the presence of a foreign substance; immune reaction.

a nuclear reactor designed to generate electricity or supply or propulsion power