leak proof

同根派生

Please make sure you use leak proof packing.
请务必用防漏包装。
The 775QT Series features a modular design which facilitates maintenance and assembly by retaining the spring load. Check modules are threaded into the valve adapter for leak proof operation.
775QT系列特点是模块化结构，通过保留弹簧负载简化维护和组装。止回阀模块通过螺纹旋进阀门适配器内，提供无泄漏运行。
leak proof and reducing resistance technology
防漏降阻技术
Repair welding of leak proof plate in charging oil vessel
带油容器加防漏板补焊
Research and Application of the IFW Leak Proof Chemical Pump
IFW型无泄漏化工泵的研究与应用