double [diametral] pitch system  双径节制

double-system double-wavelength fluorometry  双体系双波长荧光分析法

diametral pitch system  径节制

double double iron  八叠板

double pitch  双螺距的; 双向坡

double pitch function  双坡函数

double pitch roof  双坡屋顶

double system of ignition  双重点火系统

double system on-line changeover method  双系统在线热备方法

double system sound recorder  双制式录音机

double π system  双π系统

Double-system Electricity Price  两部制电价

Double-system receiver  双系统接收机

diamertral pitch  径节

diametral pitch  径节; 直径齿距; 细牙主节圆

normal diametral pitch  法径节; 螺距

transverse diametral pitch  横径节

Electric Pitch System  电动变桨距系统; 电动变桨

electrical variable propeller pitch system  电动变桨距系统

Pitch system  变浆系统