"circuitclosed"tell-tale 回路接通 指示灯
"cut-off"line灯光明暗截止线
"off"circuit 切断 电路
"three-speed"tandemaxles 三速 贯通轴
2-cylinderopposedengine二缸对置排列发动机
2-strokecycleengine二冲程发动机
4drivingwheeltractors四驱
拖拉机
4-strokecycleengine四冲程发动机
a.c.voltage交流电压
abnormalknocking异响
abradinginstrument磨损仪
abrasiontest耐磨试验
abrasive磨料、粗糙的
abrasivegrains磨粒
abrasivewheel砂轮
abrasivepaper砂磨纸
absorbentpaper吸水石
absorbingscreen吸声屏
absorptioncharacteristic吸收特性
acceleatingwinding加速线圈
acceleratedlifetest快速寿命试验
acceleratingcell加速油杯
acceleratingpiston加速活塞
acceleratingpump加速泵