你知道怎样修补内管吗？
在喷头设计中考虑了氧枪内管氧气流速，保证了用氧安全。
The oxygen flow rate was considered for lance designing to guarantee safety operation.
法兰内孔管件内孔必须倒角焊接。
注：如图所示，始终将平衡管连接进直线管道内。
NOTE: Always connect equalizer pipe into a straight run of the line, as shown.
结果：得到了完整的家兔器官内淋巴管铸型。
Result A complete lymphatic vessel casting mould of rabbit organ was got.
此文介绍了连续挤压内凸筋口琴管模具的设计方法及其模具芯头的冷挤压加工。
This paper is about die tongue making: the design method and cold-press formation.
液体经底阀6和吸入管进入泵内。
Liquid by the end of valve tube 6 and inhaled into the pump.
液体经底阀6和吸入管进入泵内。
Liquid through the bottom valve 6and the suction tube into the pump.
该冲洗管包括外管和内阀。
The cleaning tube comprises an outer tube and an internal valve.
该冲洗管包括外管和内阀。
The cleaning tube comprises an outer tube and an internal valve.
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