crackjawadj.发音困难的;反常的
crackv.破裂;砸开;发出爆裂声;撞击;破解;变嘶哑;崩溃;制裁;<非正式>开玩笑n.裂缝;裂痕;爆裂声;猛击;尝试;俏皮话adj.训练有素的
crack tip singularity field裂尖奇异场
crack propagation toughness裂纹扩展韧性
crack prevents and controls裂缝防治
crack resistance examination抗裂验算
crack of concrete and mortar混凝土和砂浆裂缝
crack control and impervious防裂抗渗
crack in large bulk concrete大体积混凝土裂缝