该下底座嵌入于该第二凹陷部。
The low base is embedded to the second concave part.
youdao
该下底座上定义一第一表面。
A first surface is defined on the low base.
废料从凸凹模和下底座中所开的槽中排出。
Waste from the punch and die and the base under which opened the tank discharges.
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