split drum是什么意思

网络释义

1)split drum,裂鼓2)swelling cracking,鼓胀开裂3)Expand and shrink,鼓包断裂4)Petrotympanic rimule,岩鼓裂管5)cracking,空鼓开裂6)Tympanomastoid notch,鼓乳裂

Reasons and prevention of cracking of aerated concrete plastering;

加气混凝土抹灰层空鼓开裂的病因与防治