短語(yǔ)詞組短語(yǔ)bedding g surface 層理面bedding g surface parting 層面裂理overwintering bedding surface 越冬層面weak bedding surface 軟弱層面bedding surface visualization 層面可視化bedding surface failure 層面破壞slope bedding surface 坡層面bedding surface parting 層面裂理bedding -plane shear surface 層面剪切滑面 返回 bedding surface