differential gear

differential gear

n. 差速齿轮

例句与用法：

An instrument that in a painless and noninvasive manner uses the differential transmission and reflection of ultrasonic waves to create a detailed visual image of the brain.

超声波心动描记器一种用来显示详细的大脑图象的仪器，利用超声波发送和反射的差异来测试并无伤无痛

Maximum price differential old new crops6% but protein content similar.

新旧作物差价最高达6％, 但所含蛋白成份一样。

词形变化：

副词: differentially |

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ph.

差速齿轮