短語詞組短語plane directing surface 準(zhǔn)平面plane valving surface 平面配流面;配流盤表面plane slip surface 平面滑裂面plane -surface solid 平面立體plane flameproof surface 平面隔爆面plane water surface wave 二維水面波fracture plane failure surface 破裂面bedding -plane shear surface 層面剪切滑面 返回 plane surface