as pm meaning in English
抗坏血酸磷酸镁
Examples
- One major pollutant contributing to china ' s bad air is particulate matter , which includes concentrations of fine dust , soot and aerosol particles less than 10 microns in diameter ( known as pm 10 )
《纽约时报》的《中国的污染已经到了极限》一文中，提到了一个衡量空气污染的指标。 - Cg - 1 magnets sensors also known as pm proximity switch sensor in the elevator shafts for flat layer control . because of its speed is faster , high reliability and energy - saving advantages , it can be widely used in various movements to control spacing and other equipment for automatic control system for sensing element role
Cg - 1型永磁感应器cg - 1型永磁感应器亦称永磁接近开关在电梯中作井道传感元件使用，即电梯平层控 - The influence that the zr / ti ratios have on the ceramic crystal structure and its properties are studied through the research carried out about the relative respects of the fabricated samples . the increase of zr / ti ratio can result in the crystal structure transformation from the tetragonal to the rhombohedral , it can also induce the weakness in the stability of the ceramic crystal structure , for example , the drop in the curie temperature . in order to enhance the relative low mechanical quality factor of pzn - pzt system piezoceramics , component addition pb ( mn1 / 3sb2 / 3 ) o3 ( hereafter abbreviated as pms ) are introduced in to form a new psudo - tetragonal system ceramics
为获得具有高的机电耦合系数kp ，高的机械品质因数qm的高性能压电陶瓷，采用二次合成法制备了不同zr ti比的铌锌酸铅-锆钛酸铅基( pzn - pzt )三元系压电陶瓷材料，研究了zr ti比变化对陶瓷结构和性能的影响规律，发现zr ti比增大除了可以使陶瓷的相结构由四方相向三方相转化外，还降低了陶瓷的结构的稳定性，使tc温度下降。