thousandth

1.a unit of angular distance equal to one thousandth of a milliradian.

角距离单于（待查表）毫弧。

2.250 parts in his cars were made to tolerances of one thousandth of an inch.

他汽车里头的250个部件公差被限至1‰英寸。

3.a power unit equal to the power dissipated when 1 abampere flows across a potential difference of 1 abvolt (one ten-thousandth of a milliwatt).

功率单于绝对安培的电流通过绝对伏特的电势差产生的能量。

4.Soil geochemical measurement of one ten-thousandth scale indicates that the anomalies of gold, stiver, copper, lead have features of high intensity and well-lapped forms.

1：1万土壤地球化学测量表明矿区金、银、铜、铅、锌具有强度大，套叠好的特点。