介绍了一种新型的变断面管无模拉伸成形方法。
A new method form aking arbitrary section tube was introduced.
介绍了阀体三通管注射模的结构。
The structure of the injection mould for the valve tee was introduced.
结论：黏蜡用于根管取模简单可靠。
Results:Every root canal impression was taken successfully in one time.
结论：黏蜡用于根管取模简单可靠。
Results:Every root canal impression was taken successfully in one time.
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