After salt water spray test, their hardness did not change.

经盐水喷雾试验后，其对于硬度并不会有所影响。

So we decided touse a fine water spray to complement the air.

所以我们决定用水喷雾来弥补空气的缺陷。

Both front and back drum have scraper and water spray equipment.

前后振动轮均有刮泥和洒水装置；

Water spray, dry chemical powder, carbon dioxide, or appropriate foam.

雾状水、干粉、二氧化碳或泡沫灭火器。

The utility model USES the water spray device to clean the adhesive materials on the rotator of fan.

本实用新型的装置通过水喷淋装置对风机转子粘结物进行清理。