英语翻译
three-speed gear
拓展翻译
三速变速器装置
three-speed gear
三速电动机
three-speed motor
人字齿轮
double heical spur wheel; double helical spur gear; herring bone gear
人字斜齿轮
double hclical bevel gear
人字正齿轮
double-helical gear
三合齿轮驱动
triple geared drive
伞齿轮
bevel gear; bevel wheel
伞齿轮式起重器
ratchet type jack
伞形齿轮
bevel gear
扇形齿轮
sector gear; sector wheel
上齿轮
cog
生皮齿轮
rawhide gear
热电子三极管
hot-electron triode
热力学第三定律
third law of thermodynamics
人参三七
Panax pseudo-ginseng Wall.
妊娠末三月
third trimester of pregnancy
妊娠首三月
first trimester of pregnancy
妊娠中三月
second trimester of pregnancy
日发三日疟
triple quartan
日上三竿
late in the morning