求翻译：桩基础采用的是地下砼灌注的工艺，可见性差，因此对施工各个工序的质量要严格控制，以避免各种质量通病的出现，从而保证工程质量。是什么意思？

Pile foundation is used in underground concrete pouring process, visibility is poor, so the quality of the construction of the various processes must be strictly controlled to avoid the emergence of a variety of quality defects, in order to ensure project quality.

foundation piles used in ground floor is poured on behalf of the craft, it can be seen that various processes, and thus the quality of construction, it is necessary to strictly control in order to avoid the emergence of various quality generic, so as to ensure the quality of construction projects.

The pile foundation uses is the underground tong irrigation craft, the visibility is bad, therefore to constructs each working procedure quality to have to control strictly, avoids various idioplasms quantity common failing the appearance, thus guarantee project quality.

Of an underground concrete filling pile foundation technique, poor visibility, so construction to strictly control the quality of individual operations, to avoid quality problems occur, thus ensuring the construction quality.

Pile foundation is used in underground concrete pouring process, visibility is poor, so the quality of the construction of the various processes must be strictly controlled to avoid the emergence of a variety of quality defects, in order to ensure project quality.