An instrument for measuring and recording the variations in the actinic or chemical force of rays of light.
The observation of the state and variations of the atmosphere.
(chemistry) variability in chemical composition without variation in crystalline form
automatically records on paper the variations in atmospheric pressure
A form of barometer so constructed as to inscribe of itself upon paper a record of the variations of atmospheric pressure.
adjustment of seasonal variations
[经] 季节性调整
admissible variation
[计] 容许变分
allowable dimension variation
[化] 允许尺寸偏差
among class variation
[机] 级间变动
amplitude variation
[电] 幅变
annual magnetic variations
[电] 岁磁变
automatic threshold variation
[电] 自动临界改变
bacterial variation
[医] 细菌变异
batch-to-batch variations
[化] 逐批质量差异
calculus of variation
[计] 变分法
calculus of variations
coefficient of cyclic variation
[建] 循环变动系数
coefficient of variation
[化] 变异系数; 变动系数[医] 变异系数, 变更系数[经] 变异系数
coefficient of variationCV
[化] 变异系数; 变动系数
complementary variational problem
[计] 余变分问题
continuous variation
[医] 连续变异
cost variation
[经] 成本变异
covariation
[计] 协变性, 协方差
covariations
(covariation 的复数) [计] 协变性, 协方差
cyclical variation
[经] 周期性的变动
