1) standard seed damage percentage
标准子害率
1.
During the selection for cotton materials resistant to PBW, We derive a standard seed damage percentage(K) from the seed damage percentage of the control(X CK ) and that of the average of the whole experiment (X) according to the formulation K=(X .
用标准子害率（对照子害率与平均子害率之和的平均值），进行棉花抗性分级有可能提高结果的准确性、稳定性和重演性。
3) injury standard
伤害标准
4) atomic frequency standard
原子频率标准
1.
In order to get rid of the dependence on other countries and establish self-governed time and frequency standard, the research on atomic frequency standard is imperative under the situation.
为了改变我国时间频率系统对国外的依赖，建立我国独立的时间频率基准，原子频率标准的研制势在必行。
5) quantum frequency standard
量子频率标准
补充资料：德国国家标准(见德国标准化学会、德国标准体系)
德国国家标准(见德国标准化学会、德国标准体系)
National Standards of Germany: see Deutsches Institut für Normung, DIN;standards system of Germany
Oeguo Guol心日icozhun德国国家标准(Natio.吐S加Ln山切曲of Gen”旧ny)见德国标准化学会;德国标准体系。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条