Because it cannot fully evaluate the dull bit characteristics, IADC published the Eight Point Dull Bit Grading Scheme to replace the old scheme.是什么意思_Because it cannot fully evaluate the dull bit characteristics, IADC published the Eight Point Dull Bit Grading Scheme to replace the old scheme.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句