principal datum是什么意思

用法例句

In experiments, aluminum salt was used as main hydrolyst and reagent A as assistant hydrolyst.

实验采用铝盐作主水解剂，试剂Ａ作助水解剂，ｐＨ值小于３，在常温条件下实现了对ＢＦ４的高效水解。

Water diverted from the Luanhe River to Tangshan is a main water source of the Caofeidian Industry Zone.

唐山市引滦供水系统是曹妃甸工业区的主水源。

The Explore of the Main Pump Improvement in Jianbi Pump Station;

谏壁站主水泵改造方案探讨

Taxis responses of three oriental fruit fly (Bactrocera dorsalis Hendel)populations to the odors of three host fruits;

桔小实蝇对寄主水果气味的趋向反应测试

The article concentrates that using the method of the combination of traditional theoretical research and the study of contemporary clinic and experiments,we make theoretical exploration on the theory of the kidney controlling water and do clinical and experimental research ,meaning to reveal the gist of the kidney controlling water.

本文运用传统理论研究与现代临床及实验研究相结合的方法,对“肾主水”理论进行了理论探讨与临床和实验研究,旨在揭示肾主水的深刻内涵。