Surfaces to be welded or thermally cut shall be cleaned of all foreign material such as grease, oil, dirt, scale, slag and paint that would be detrimental to either the weld or base material.
需焊接或热切割的表面应排除所有可能会损坏焊材或母材的杂物，如脂、油、灰尘、水垢、熔渣和油漆等。
Pipe lines should be thoroughly flushed to remove foreign material before installing the unit.
在安装设备之前，应该彻底清洗管道，清除外来杂质。
Also look for dust particles, hair, or any other foreign material that may interfere with the 'o' Ring sealing.
同时看一下有没有灰尘、头发或者其他影响O型圈密封的东西。
One of them is that you have to keep taking drugs to stop the body rejecting the foreign material in the heart.
其中一个问题就是患者必须终身服药以避免肌体的免疫排斥反应。
Pipe shall be homogeneous throughout, free from cracks, holes or foreign material, and shall be free from blisters, dents, ripples, die and heat marks.
管子应通体均匀，无裂纹、无孔眼或杂质，还应无气泡、凹痕、波痕、拉模划痕和热痕。
Before manually starting up, inching or operating the equipment, check shall be conducted on it to confirm no man or foreign material stays inside the machine.
在手动、点动、运转设备前要检查，确认机器内无人、无异物。
Screening system is installed at specialized coal ship loading terminal to make foreign material content meet the cargo owner's requirement and improve the quality of coal for export.
在专业化的煤炭装船码头设置筛分除杂系统，能根据货主要求控制煤炭中的杂物含量，提高出口煤炭的质量。
Be sure of the wound cleansed of all dead and foreign material, the wound was covered with local flap, musculocutaneous or gastrocnemius flaps depending on the size and localization of wound.
根据缺损面积大小常规行局部皮瓣，筋膜瓣及腓肠肌内侧头肌皮瓣转移修复术使创面彻底覆盖。
Inclusion. Foreign material or non-metallic particles entrapped within the metal during solidification.
夹杂物。金属凝固过程中残留在其内部的杂质或非金属颗粒。
Inclusion. Foreign material or non-metallic particles entrapped within the metal during solidification.
夹杂物。金属凝固过程中残留在其内部的杂质或非金属颗粒。
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