The degree of hotness or coldness.
The degree of hotness or coolness of a color, measured in degrees Kelvin. If a video display is said to have a color temperature of 7,000° Kelvin, for example, the whites have the ...
The smallest unit of matter that is unique to a particular element. They are the ultimate building blocks for all matter.
The interacting system of a biological community and its non-living environmental surroundings.
An opening in a membrane or medium that allows water to pass through.
An atom in a solution that is charged, either positively (cations) or negatively (anions).
A process that uses electrical current applied to permeable membranes to remove minerals from water. Often used to desalinize salty or brackish water.
Microscopically small single-cell organisms, that reproduce by fission of spores.
词条
词汇
关注者
A chemical that is toxic to microrganisms. Biocides are often used to eliminate bacteria and other single-cell organisms from water.
0
4
95
10
51
11
20 词条
