Blow out lines to remove all loose scale and other foreign matter that can damage valve seat.
向管道吹气，清除所有疏松鳞锈和可能损害阀门阀座的其他外部杂质。
It can also contain pus, blood, fibrin, bacterial products or other foreign matter.
它还含有脓，血液，纤维，细菌产物或其他外来物质。
Thoroughly clean all metal surfaces of all rust; scale, grease, rough spots and other foreign matter, which may prevent proper paint adhesion.
彻底清除所有金属表面的锈迹，污垢，油脂，糙点，及其他防止油漆附着效果的杂质。
All the surfaces must be free of oil, grease, moisture, dust and other foreign matter before application.
涂装前所有的表面必须没有油脂、水汽和杂质。
In the short term its other foreign relationships may matter more, even in Asia: there may, for instance, be a greater risk of conflict between rising China and an ageing but still powerful Japan.
短期看，日本的其他对外关系或许更为关键，甚至是在亚洲：例如，崛起的中国和瘦死骆驼比马大的日本之间发生冲突的风险更大。
Rods and wires shall have a smooth finish, free from surface imperfections, corrosion products, grease or other foreign matter which would affect the quality of the weld.
焊条与焊丝应该表面光洁，不能有表面缺陷和锈垢、油脂以及其他杂质，因为它们会影响焊接质量。
The liquid LQ seals off the interior of the apparatus from the exterior to prevent the entry of mist, dust and other foreign matter.
液体LQ将设备内部与外部封隔以防止烟雾、灰尘和其它异物进入。
The liquid LQ seals off the interior of the apparatus from the exterior to prevent the entry of mist, dust and other foreign matter.
液体LQ将设备内部与外部封隔以防止烟雾、灰尘和其它异物进入。
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