The test results showed that the oxyacetyleneflame powder spray weld made the structure of the base material corse, or madethe tempering sorbite of the original steel become the corse pearlite and blockferrite decreasing greatly the hardness.是什么意思_The test results showed that the oxyacetyleneflame powder spray weld made the structure of the base material corse, or madethe tempering sorbite of the original steel become the corse pearlite and blockferrite decreasing greatly the hardness.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句