该换能器由前后金属盖板、两组周向极化压电晶堆及电负载组成。
The transducer consists of back metal cylinder, front cylinder , two groups of tangentially polarized piezoelectric ceramic piles and electric load.
它的形成是非重力水向四周扩散，在晶花生成时，水的运动主要是其表面强力或毛细管张力驱动的结果。
It is the formation of a non-gravity spread to the surrounding water, flowers in crystal formation, the water movement is mainly the surface tension force or the capillary-driven results.
本发明涉及一种治疗部分癫痫发作和外周神经痛药物普瑞巴林的新晶型、制备方法 及其含有它的药用组合物。
The invention relates to a new crystal system, a method for preparation of pregabalin which can be used as medicines for curing epilepsy and peripheral neuralgia and its medicinal compounds.
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