Microstructure and fractography for the specimens of X80 pipeline steel chargied with hydrogen in constant load tests and in slow strain rate tests(SSRT)were studied by optical microscopy and SEM.是什么意思_Microstructure and fractography for the specimens of X80 pipeline steel chargied with hydrogen in constant load tests and in slow strain rate tests(SSRT)were studied by optical microscopy and SEM.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句