“弧”造句
2024年06月03日 04:04:45
通常的实验室光源选用汞
弧灯.
A common laboratory source of light is provided by a mercury arc.
不很精确的射电干涉仪观测表明,这个源的角径约为1.5
弧秒.
Comparatively rudimentary interferometer observations suggested that this source is about 1.5 across.
单个
弧是不能求长的.
The individual arcs cannot be rectified.