Due to the existence of the eddy and the abrupt bend of the stream line , the pressure on the four faces has the distribution as follow : the lowest pressure appears at several centimeters after the angle point along the top boundary , the highest pressure appears near the center line of the vertical shaft on the bottom boundary , near the angle point , the pressure on the inner boundary decreases with the decreasing height , the pressure on the external boundary decreases slightly in the right - angle region , and increases obviously near the corner 回流漩涡的存在，以及直弯处流线的急剧弯曲，导致壁面压力分布在上表面距弯点一定距离后出现压力最小值，下表面上，在竖井中心线略偏下游的位置出现压力最大值，竖井内表面接近弯点处出现压力沿程降低的现象，竖井外表面压力在进入直弯后先是沿程略有降低，在直弯角落处又明显升高。
The first thing to do on defense therefore is for the woman to get away from the smash ( and the man will likely smash at her because she is so close to the net ) by quickly taking a position cross - court from the shuttle about three feet behind the short service line and half - way between the center line and the inside side line 对于女选手来说，首先要做的事情就是远离这样的杀球（由于女选手的站位靠近网前所以更容易被男选手攻击） ，快速的斜线后退大概距离发球线三英尺，站在中线和发球线的中间。
This paper stated that during the establishment and implementation of qms in fdii , the eight principles of quality management was the theoretical basis , the deep understanding of standards was the prerequisite , the process method was the center line along which the qms was established , implemented , maintained and improved , and the high effectiveness was viewed as a basic requirement to implement qms . in the view of the real demands of fdii , " one promise " . " five schemes " and " seven assurances " were suggested 本文在对设备设计及测试技术研究所建立和实施运行质量管理体系的过程中，坚持以质量管理八项原则为理论基础，以对标准的深化理解为前提，以采用过程方法建立、实施、保持、改进质量管理体系为主线，以如何实施质量管理体系运行的有效性为基本要求，结合研究所的实际需要，提出了“一个承诺” 、 “五个策划” 、 “七个确保”的原则，突出“四个重点” ，用产品审核、过程审核、内审、管理评审、自我评价等手段对质量管理体系进行监督控制，奖惩并举。
