考察了气速、压力、温度、静床高及固体引入等因素对气含率的影响。

The effect of various factors on gas holdup has been studied.

youdao

我需要一张高边的儿童床。

I need a child's bed with high sides.

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我把枕头抖松把床摇高变成坐姿，他坐下来。

I fluffed his pillow, pushed the bed into a sitting position and he sat down.

youdao

我把枕头抖松把床摇高变成坐姿，他坐下来。

I fluffed his pillow, pushed the bed into a sitting position and he sat down.

youdao