primary seal

But his often confrontational approach that kept his name in presidential primary talks for months was demonstrated in a shouting match today with a student who is a also a former Navy SEAL.

富有争议的言论使得他数月以来都在总统初选对话占据一席之地，今天与一个曾是海豹特种部队成员的学生有了激烈的争吵。

The primary and middle school students in "small gap hand" special programs to write more than twenty thousand seal, received promised return receipt rate is96.8%.

广大中小学生在“小手拉大手”专题节目中写信两万多封，收到承诺回执率达96.8%。

Through the analysis show that the deformation of the primary ring has great effect on seal ability property of mechanical face seal.

通过分析可知，动环的形变是对机械密封密封性能有较大影响的参数。

This take the method of optimization of hydraulic design whose target specification is efficiency. Also, it uses combination vane and double-seal system which was tested by hydraulic experiment and field primary operation that kind of pump is a combination of ideal performance and seal reliability.

理论上采用以效率为目标函数的优化水力设计方法，并采用复合叶轮和双密封结构，经水力试验和现场运行表明，该泵具有很理想的性能和密封可靠性。

The Primary Study on Kinetic Process of Harp Seal Oil in Rats with Liquid Chromatography and Mass Spectrometry

海狗油大鼠体内药物动力学初步研究