Based on the principle of volume contraction of freezing, the designing process of riser fitting to the cast steel inserted die with exothermic covering flux has been studied.

根据体收缩原则，研究了适用于模具镶块铸钢件加发热覆盖剂保温的冒口设计工艺。

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The forging die of adjustable pliers has been analysed and improved from integral die to inserted type die which is convenient in striking and assembling and its pack-age is easy to be changed.

对管子钳钳口的锻模进行了分析改进，将整体式锻模改为拼装式锻模。

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The American Marines operated on my foot and inserted metal pins, which will remain there until I die.

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