The shading network connected to thread uses an expression to drive the displacement threading and a ramp to prevent the threading from appearing on the head and the tip of the screw 这个材质网络用一个表达式连接到螺纹去驱动螺纹的置换和一个渐变，去防止螺纹在顶端出现和在螺纹尖部出现。
Acropetal describing a process ( such as growth or development ) that progresses from the base or boint of attachment , so that the oldest parts are at the base and the youngest are at the tip 向顶：描述植物器官生长或者发育的一个过程，这个过程是自下而上的，因此较年老的部分在底端，而幼小的部分在顶端。
It was built in 1420 in the early ming dynasty and renovated in 1977 . in the old days , watchtowers placed at regular intervals around the perimeter guarded the wall . the double gate system played an important role in repulsing enemy attacks 明清时期正阳门城楼与箭楼之间原有一个巨大的瓮城，南端呈弧形抹角，箭楼坐落在顶端，瓮城南北长108米，东西宽88米，内有空场，四向均有门。
Both static and cyclic load tests are conducted for a same size specimen . the purpose is to find the effect on shear strength from different height - width ratio , and to get the shear resistance limit by static and cyclic loading . according to test results , the improvement suggestions for the wall details and design are presented in this paper 同样尺寸的二个试件分别在顶端进行水平单调加载和水平方向低周往复加载抗剪试验一次，试验目的是测试墙体的不同高宽比对抗剪强度的影响以及墙体在单调加载及低周反复加载两种情况下的抗剪强度pu并做出比较，从而对墙体构造及设计提出改进建议。
Today many astronomers believe that the various forms seen in planetary nebulae can be explained by one model that we see from different angles . if we sight down the axis of the flow , we see a round nebula like the ring . looking from " above " , the bipolar flows are conspicuous , as with ngc 6302 天文学家相信行星状星云的不同形态是基于在不同的观测角度下的视觉效果，若沿著恒星风吹出的方向望去，则会看见像戒指星云的结构在顶端观看，行星状星云有明显的双极结构例如行星状星云ngc6302 ，而在界乎两者之间，则会看到像行星状星云ngc2346的结构。
The results indicate that the time of press influences sawtooth distortion greatly , but infects sawtooth less . root of the sawtooth made by the method of static simulating rolling have no changes hardly , and from the upper distance the changes became , then on the top the sawtooth curves to the opposite direction 结果表明：压制时间对齿形的变形影响较大，对齿型的影响很小；模拟轧辊压制的锯齿，根部一段几乎没有变化，是从一段距离开始变形，然后在顶端向相反的方向弯曲；压制成型后，铝板厚度的变化很小。
I discovered , too , that a great pleasure , an enjoyment which the horizon only bounded , lay all outside the high and spike - guarded walls of our garden : this pleasure consisted in prospect of noble summits girdling a great hill - hollow , rich in verdure and shadow ; in a bright beck , full of dark stones and sparkling eddies 我还发现，就在顶端用尖铁防范着的花园高墙之外，有着一种莫大的愉快和享受，它广阔无垠，直达天际，那种愉快来自宏伟的山峰环抱着的一个树木葱笼绿荫盖地的大山谷也来自满是黑色石子和闪光漩涡的明净溪流。
