crystal faces短语¹⁴⁴⁹⁷²⁺² 基本例句 晶体学晶面 On those surfaces observed we have seen the shape of porous-sponge and full of bumps and holes, which is different from many mineral crystal faces or sections entirely. 发现3种麦饭石观察面均具有多孔海绵样凸凹不平形态，与大多数矿石晶面或断裂面截然不同； cnki