Package is trilateral sealing and quadrilateral sealing form.
包装形式有三边封口和四边封口。
This machine's configuration compact, finish the complicated sealing form.
该机结构紧凑，可完成复杂的封尾形式。
ANSI flange sealing principle is extremely simple: the two bolts each other extrusion flange sealing surface and form a seal gasket.
ANSI法兰的密封原理极其简单：螺栓的两个密封面相互挤压法兰垫片并形成密封。
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