Unless otherwise specified, the notched-bar impact work shall be verified on every forging or test piece by notched-bar impact-bending tests.是什么意思_Unless otherwise specified, the notched-bar impact work shall be verified on every forging or test piece by notched-bar impact-bending tests.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句