查询词典 planetary nebula

spur wheel back gear：正齿背齿轮

spur type planetary reducer ==> 正齿式行星减速齿轮 | spur wheel back gear ==> 正齿背齿轮 | spur wheel countershaft ==> 正齿轮副轴

Three-ring gear drive：三环传动

谐波齿轮传动:harmonic gear drive | 三环传动:Three-ring gear drive | 行星齿轮传动:planetary gear drive

three-hour range index：三小时段指数

three-hour geomagnetic planetary index ==> 三小时全体地磁指数 | three-hour range index ==> 三小时段指数 | three-in-hand ==> 三驾马车

three-hour geomagnetic planetary index：三小时全体地磁指数

three-hole aperture ==> 三孔光栏 | three-hour geomagnetic planetary index ==> 三小时全体地磁指数 | three-hour range index ==> 三小时段指数

spur gearing：正齿轮传动装置,正齿轮对

spur-gear wheel ==> 正齿齿轮 | spur-gearing ==> 正齿轮传动装置,正齿轮对 | spur-type planetary gear ==> 正齿式行星齿轮

cutter setting gauge：切割机调定量规

cutter planetary gear reducer;切割机行星齿轮减速器 | cutter setting gauge;切割机调定量规 | cutter shaft;切割机轴

synoptic-scale weather system：天气尺度天气系统

行星尺度天气系统 planetary scale weather system | 天气尺度天气系统 synoptic scale weather system | 中小尺度天气系统 meso and micro-scale weather

hour glass：砂漏

砂轮越程槽 grinding wheel groove | 砂漏 hour-glass | 少齿差行星传动 planetary drive with small teeth difference

plan position indicator (P.P.I：平面(位置)指示器

"平面模","planetary model" | "平面(位置)指示器","plan-position indicator; p.p.i" | "厂;设备","plant"

helical gear reducer：斜齿轮减速机

齿轮减速机 Gear Reducer | 斜齿轮减速机 Helical gear reducer | 行星减速机 Planetary reducer

sidearm shot：体侧射门

81.转身射门:pivot shot | 82.体侧射门:sidearm shot | 83.大转身射门:turnaround shot

a beast of burden：作牛作马. //野兽的负担

3.the apple of one's eyes 掌上明珠/这个苹果的人的眼睛 | 4.a beast of burden 作牛作马. /野兽的负担 | 5.a bed of roses 安乐窝 /事事称心如意