The quality problem of the electric installation engineering influence directly the safety and comfort of the buildings, so we should take prevention measures against quality defects.
电气安装工程的质量问题直接影响建筑的安全和舒适，因此我们应采取具体预防措施避免出现质量问题。
It is a key technique of raising cement job quality and protecting oil and gas reservoirs to solve the problem of gas channeling prevention in cementing job.
解决注水泥作业的防气窜问题，是提高固井质量，保护油气层的关键技术。
According to statistics, the leakage of traffic tunnels is a serious problem in China, and the overall quality of prevention and drainage projects in subway tunnels is not satisfied.
据统计，目前我国交通隧道渗漏水问题十分严重，隧道与城市地铁防排水工程的总体质量并不能令人满意。
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