maintenance pit

基本解释

The only way of overcoming the problem is by opting for dedicated earthing to the machine and by regular maintenance of earth pit.
避免这个问题的唯一方法是选择机床专用的接地线并定期维护接地点。
nhmould.cn
The mainly keystone is:excavation and maintenance groudsill pit, propping up pond wall moulding board and casting pond wall concrete.
包括基坑开挖支护，支池壁模板和池壁混凝土的浇筑。
The paper emphasizes:checking safety computations of armor plate piles, preventing and disposing quicksand during excavation and maintenance groudsill pit;
重点论述：基坑开挖支护中，钢板桩支护的安全性验算及流沙的防止与处理；

An important appeal was also heard for a concerted effort to recruit, train and retain the personnel needed to manage large-scale construction programs that will be essential if the Nation is to meet future plutonium "pit" manufacturing, tritium and other requirements associated with the maintenance of a safe, reliable and effective nuclear deterrent.
CENTERFORSECURITYPOLICY: Center For Security Policy