So, we must pay high attention to the press solid work preface.

因此，必须高度重视压实工作。

People also obviously feel this time old carpenter's speed be too quick and use to anticipate and work preface all not and so strict.

人们也明显觉得这次老木匠速度太快，用料和工序都不那么严格了。

In boiler maintenance, from each work preface welding related to weld control process of quality and construction for boiler business enterprise provided a set of quality control method.

锅炉安装维修是锅炉投产前的关键步骤，安装维修工程质量直接影响到设备的使用性能，甚至影响到设备的使用寿命和安全运行。