双触点电磁开关
double-contact electromagnetic switch
双触点调节器
double contact controller
双断点触头系统
double-gap contacts system
双排四点接触球轴承
double rows four point contact ball bearing
双向先合后断触点
two-way make-before break contact
双点点焊接头
Double-spot welded joints
无触点点火系统
breakerless ignition system
pH-V双点电位滴定法
pH-V potentiometric double-point titration
闭式单点双动拉伸压力机
straight side single point double action drawing press
闭式双点单动双曲柄压力机
stright side single action double crank press
闭式双点压力机
straight side double crank press
straight side two point press
闭式四点双动拉伸压力机
straight-side 4-point double-action drawing press
straight side four point double action drawing press
低熔点双组分合金
lower melting point dual component metallic alloy
点双数列相关
point biserial correlation