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related to atoms, the smallest units of matter, including their structure, properties, and interactions
原子的
(biology) the part of a cell that contains most of the genetic information
细胞核, 核
a link that holds atoms or ions together in any molecule or crystal
键, 联系
the physical property in matter that causes it to experience a force in an electromagnetic field
电荷, 电电荷
(physics) the degree to which a substance is compacted, measured by dividing its mass by its volume
密度, 体积密度
(physics) the universal force of attraction between any pair of objects with mass
重力
(physics) any of the smallest units that energy or matter consists of, such as electrons, atoms, molecules, etc.
粒子
a feature or quality of something
属性, 特性
a natural reaction or behavior that occurs automatically, without conscious thought or reasoning
本能, 冲动
the chemical processes through which food is changed into energy for the body to use
新陈代谢, 代谢作用
related to evolution or the slow and gradual development of something
进化的
from or related to living things
有机的, 生物的
(biology) the slow and gradual development of living things throughout the history of the earth
进化
the complete set of genetic material of any living thing
基因组
(biology) a change in the structure of the genes of an individual that causes them to develop different physical features
突变, 遗传变化
an unhatched or unborn offspring in the process of development, especially a human offspring roughly from the second to the eighth week after fertilization
胚胎, 胎儿
an animal or plant with parents that belong to different breeds or varieties
杂交种, 混种
a cell or a group of cells created through a natural or artificial process from a source that they are genetically identical to
克隆, 克隆技术
(of a living being) to produce offspring or more of itself
繁殖, 生殖
something that triggers a reaction in various areas like psychology or physiology
刺激, 刺激物
the act of producing a substance that exists in living beings
合成
to increase the velocity of something
加速, 提高...的速度
(of a solid) to become one with a liquid
溶解, 融化
a water-soluble chemical substance that contains Hydrogen and has a sour taste or corrosive feature with a PH less than 7
酸, 酸性物质
a light silver-gray metal used primarily for making cooking equipment and aircraft parts
铝, 铝
a metallic chemical element that has a red-brown color, primarily used as a conductor in wiring
铜, 红色金属
a heavy soft metal, used in making bullets, in plumbing and roofing, especially in the past
铅, 重金属
a substance that permits electricity to pass through or along it
导体, 导电体
a substance of small size and equal sides, formed naturally when turns to solid
晶体, 晶体群
a type of powder that is explosive, used in making bullets, bombs, etc.
火药, 黑火药
an explosive that is very powerful
炸药, 一种非常强大的爆炸物
the different elements that form something or the arrangement of these elements
组成, 构成
to release heat, light, sound, radiation, etc.
发出, 释放
a narrow beam of light, heat, or other form of energy
光线, 光束
a device that produces a powerful and concentrated beam of light that can be used in medical procedures, for cutting metal objects, etc.
激光, 激光束
an object that produces an invisible field capable of attracting certain metals without physical contact
磁铁, 磁性的
related to heat or temperature, including how heat moves, how materials expand with temperature changes, and the energy stored in heat
热的, 热量的
to press two things together or be pressed together to become smaller
压缩, 压紧
a machine that produces electricity by converting mechanical energy into electrical energy
发电机, 交流发电机
to become gas or vapor from liquid
蒸发, 汽化
a space that is utterly empty of all matter
真空, 虚空
without end or limits in extent, amount, or space
无限的, 无边的
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