grained layer meaning in English

颗粒层

Single grain layer varistor
单颗粒层电压敏电阻器
Abstract : the resistance formulas of air - flow through grain layer which are commonly used are collected in this article . the resource , relationship and usage coverage of these formulas are discussed . the values from these formulas are compared . and the factors influencing the resistance are stated . at the end of this article , the attention which should be paid concerning air - flow resistance through grain is pointed out
文摘:本文汇集了粮层阻力的主要计算公式，指出各公式的来源、相互关系及使用范围，对这些公式的计算值进行了比较，分析了各因素对粮层阻力的影响，指出计算粮层阻力时应注意的问题。
It has been discovered that ( 1 ) in the region between 100 - 350 the friction coefficient is lowering along with the swing of temperature ; ( 2 ) the friction coefficient is the highest at the temperature of 500 , and adhesive wear occurred ; ( 3 ) the global graphite grain layer appeared at the surface of wear scar at 450n and 300 , and played an extremely good effect of lubrication , thus makes a fairly lower wear at the temperature of 300
发现： ( 1 )在100 ~ 350区间，随温度的升高，摩擦因数在降低； ( 2 )在500时，摩擦因数最高，且发生了粘着磨损； ( 3 )在450n ， 300时，磨痕表面出现了球状的石墨颗拉层，这起到了极好的润滑作用，使得300时，磨损较低。