definite area造句怎么写

On the basis of analysing the experiments of atomized jet vacuum pump. it puts forward an empirical optimized working pressure formular for a definite area ratio in.

The mid-day bulletin had not mentioned any definite area.

Cylinders should be assigned a definite area of storage. The area should be dry, cool, well-ventilated, and preferably fire-resistant. Keep cylinders protected from excessive temperatures by storing them away from radiators or other sources of heat.