止推轴承 thrust bearing

    止推垫圈 thrust washer

比例 proportion

    比例尺 scale

    比例常数 proportionality constant

    比例极限 proportional limit

    比较器 comparator

    比热容量 specific heat capacity

    水平投影面 horizontal plane

    水平仪；平水尺 spirit level

    水气掣；漏电断路掣 earth leakage circuit breaker (ELCB)

    水晶胶；聚酯树脂 polyester resin

    水晶胶的铸造成形 resin casting

    水磨砂纸 silicon carbide paper

    火叉 firing fork

    火水；煤油 kerosene

    火牛；变压器 transformer

    火石轮 grinder

    火花电蚀法；放电极加工 electrical discharge machining

    火酒；工业酒精 methylated spirit

    火钳 tongs

    火线；活线 live wire

    火砖 fire brick

    爪扣；爪形离合器；犬齿式离合器 dog clutch

    牙板；丝模 die

    牙板扳手；丝模扳手 die holder (stock)

    牙板螺帽 die nuts

    牛皮胶；动物胶 animal glue

    牛油纸 tracing paper

    牛顿运动定律 Newton's laws of motion

    犬齿式离合器；爪扣；爪形离合器 dog clutch