A vacuum pump creates negative pressure for correct operation of the filtrate recovery system.
真空泵产生的负压是保证滤液回收系统的正确运行。
Closed system, negative pressure operation, no dust emissions, a good operating environment.
系统全封闭，微负压操作，无粉尘飞扬，操作环境好。
But the cementing operation is very difficult because of the complicated formation pressure system.
而调整井具有地层压力系统复杂的特点，给固井施工带来很大难度。
But the cementing operation is very difficult because of the complicated formation pressure system.
而调整井具有地层压力系统复杂的特点，给固井施工带来很大难度。
应用推荐