同根派生 system of measurement相关词英汉例句There are two systems of units in common use in mechanics.在力學中通用兩種單位制。The unit of impulse, in any system, equals the product of the units of force and time in that system.在任一單位制中,沖量的單位等於該單位制中力和時間單位的乘積。system of measurement更多例句