The presence of a large density of contaminant causes anomalous increases in the diode current with increasing reverse bias . 大量沾污也会使二级管电流随反向偏压的增加而呈现反常的增大。
The general objective of distillation is the separation of substances that have different vapor pressures at any given temperature . 蒸馏的一般目的,是分离在任何给定温度下具有不同蒸汽压的诸物质。
Table 1 . changes of hr and map ( x s , n = 47 ) 表1 .心率和平均动脉压的改变
Fold catastrophe model of mining fault rockburst 矿井断层冲击地压的折迭突变模型
Industrial valves . drain hoss or pressure tap 工业阀门.加压和卸压的加厚部件