Titanium in the pure state can exist in either of two allotropic forms.纯钛以两种同素异形的形式存在.Carbon and sulfur and phosphorus are allotropic elements.碳、硫磺和磷是同素异形元素.Ozone ( O 3 ) is allotropic form of oxygen ( O 2 ) with three a...
乱切,乱打用击打 、 压 、 切或撕的方式使残缺不全或形状破损.To mutilate or disfigure by battering, hacking, cutting, or tearing.属于、关于或形状象环形 、 园环形.An unraised doughnut, usually twisted but also shaped into rings or oblongs.他们往往是被夸大了畸形或形状或表达.They are...