Owing to the pump structure and side clearance between screw, it can transport non-lubricative medium.
由于这种泵的结构和螺杆间存在的侧间隙，它可以输送非润滑性介质。
Structure, work principle and service and maintenance of the automatic valve clearance ad-juster are introduced.
介绍了气门间隙自动调整器的结构、工作原理，以及其维护与保养。
Structure, work principle and service and maintenance of the automatic valve clearance ad-juster are introduced.
介绍了气门间隙自动调整器的结构、工作原理，以及其维护与保养。
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