three-coat

She worked away ， clearing the ground ， for two or three hours ， and had to take her coat off because she got so hot.

她埋头干着，清理着地面，一直忙活了两三个小时，而且已经脱掉了大衣，因为她实在是太热了。

Through the atmospheric exposure comparison test of different coating systems, the difference of weathering resistance in different coating systems is discussed. The difference of two-coat and three-coat is summarized, and possibility of simplifying coating system is advanced as well.

通过不同涂装体系的耐候性对比试验，探讨了不同涂装体系在自然曝晒条件下耐候性的差异，从而总结出两涂层和三涂层的差异，并提出了简化涂装体系的可能性。

He should wear twinkling patent leather boots and in the breast pocket of his sack coat there should be a white handkerchief protruding about three quarters of an inch above the vent.

他该穿双闪闪发光的漆皮靴，短便衣口袋上应该别一条白手帕，露出来四分之三英寸。

Advantages to one-coat stucco include the speed of application allowing completion of the stucco in about one half the time required for a three-coat installation.

上一层灰泥的优势加之其施工速度，使得上灰的完工时间仅用了上三层灰泥所需要的时间的一半。

Techniques of Applying Three-Coat Melting Epoxy Powder to Steel Pipe Piles

钢管桩三层熔结环氧粉末涂敷技术