Principle and method for selecting variablespeedratio curves of manual and power steering gears are discussed.
讨论了手动及动力转向器变速比曲线的选择原则及方法。
2
The source of PT acid in PTA, the crystal principle of PT acid and PTA, the variable factors cooling speed and solvent ratio in the crystal process were analysed.
分析了PTA中PT酸的来源，PT酸与PTA结晶过程的结晶原理，结晶过的可变因素冷却速度和溶剂比。
3
It can enhance the response speed of system to apply frequency variable adjusting speed technique, it is able to guarantee the optimization requirement of air-fuel ratio more satisfactory.