two-direction pressing

The chromosomal number, pattern and karyotype of two short-lived plants are researched by pressing the common root tip into pieces in it.

本研究用常规根尖压片方法，研究了2种短命植物染色体数目、形态和核型。

There were two main political groupings pressing for independence.

有两大主要的政治团体要求独立。

Standard system and quality system two set of standards, in the same industry in how to effectively carry out, combine, it is to deepen enterprise standardization work of a pressing matter of the moment.

标准体系与质量体系二套标准，在同一企业中如何有效的贯彻、结合，是深化企业标准化工作的当务之急。

The utility model relates to a single-action two-way equalizing valve, comprising a valve body, a valve plug, a valve rod, a pressing cover, a compensating cushion ring, etc.

本实用新型是一种单动双通平衡阀，由阀体、阀塞、阀杆、压盖、补偿垫圈等组成。

After treated by pressing or ball milling, Al-C powders can react before Al melts, but the reaction rate and reaction temperature range are greatly different in the two cases.

但经过压块或球磨处理，Al、C混合物能够进行反应。该反应受动力学影响，反应温度和速度相差较大。