当然, 坐标系 ( x, y, z ) 轴向的选择是任意的.The choice of orientation of the ( x, y, z ) coordinate system is, of course, quite arbitrary.除此之外, 具有曲线型齿线之齿轮在运转时亦不会产生轴向的推力.Moreover, a gear pair with curvilinear - tooth traces operates wi...
以前, 研究人员在附近发现了形成于水下的枕状熔岩和球根状熔岩流.Previously, researchers had found nearby pillow lavas , bulbouslava flows that form - under water.墨西哥的一种球根状草本植物,为其漂亮而又鲜红的单花而栽培.Mexican bulbous herb cultivated for its handsome bright red s...
At the onset of germination, the hypocotyl elongates rapidly by cell enlargement.萌发开始时, 下胚轴依靠细胞增大而迅速伸长.It's simple really: Hair that's longer than your face elongates it.这款发型的确很简洁: 头发比脸长会使脸看上去长一些.As spermatid n...