请参阅侧边栏“可变集合”，了解更多这方面的信息。

See the "Mutable collections" sidebar for more about that.

youdao

该仪器使用可变光栏黑体和反射式平行光管模拟不同大小、距离的目标，并创新性地采用激光测量的方法测量微小的绕动角。

The instrument USES an adjustable diaphragm blackbody radiator and a reflecting collimator to simulate objects with various size, range and radiation characters.

youdao