常見(jiàn)例句雙語(yǔ)例句On one hand, hook type of oscillation mark would make surface defects on strand, such as inclusion, crack and hypodermal pore.鉤型振痕一方面會(huì)使鑄坯表面產(chǎn)生夾渣、裂紋和皮下氣孔等缺陷； 返回 hypodermal strand