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我厂于一九七八年开始研制环氧泡沫塑料拉伸模,经过一系列试验,取得了一定的成效,现将前一阶段的试验情况报告如下: 一、泡沫体的种类和选择
Our factory began to develop the epoxy foam tensile mold in 1978. After a series of tests, we have achieved some results. Now we report the test results of the previous stage as follows: 1. The types and choices of foam