In a more technical interpretation , after the shoulder rotates beyond the vertical toward the breast , a continuous simultaneous double arm pull may be used to initiate the turn 更技术性的解释就是肩部旋转超过胸部的垂向后，可以连续同时采用双臂划水来引导转身。 （这句话有点别扭，回头再斟酌。 ）
Gone was the leaden canvas , the lace up front , the long stovepipe legs , the double thick seams and buttons that hurt when you paddled . nothing of the old was left so they started from scratch 沉重的帆布缀花边的前部长烟囱似的腿部，还有划水时会把人弄痛的两条厚接缝和钮扣，这些累赘统统予以抛弃。
Yetter says when focusing on dps , it ' s important to subtract the negatives , meaning that instead of adding elements of power to your stroke , you should take out any resistance 耶特认为，当你专注于dps时，最重要的是减少反向阻力：也就是与其拼命增加划水的力度，不如试着减少所有可能产生阻力的因素。
Rabbit brother and sister to the water , the game is very simple to operate , the key to escape various obstacles , the space bar to jump over obstacles pay attention to the road can be collected treasures 兔子兄妹来划水,游戏的操作非常简单,方向键躲避各种障碍,空格键跳过障碍,同时注意路上可以收集的宝物
Body roll occurs largely to position sets of muscles to move joints to produce longitudinal forward propulsion and coupled with the arm pull produces a more direct propulsive force off the hand / forearm - propelling surface 身体的滚动幅度大会使肌肉群一起运动产生纵向的推进力而且是两倍于手臂划水直接产生的推进力。
Introduction : rabbit brother and sister to the water , the game is very simple to operate , the key to escape various obstacles , the space bar to jump over obstacles pay attention to the road can be collected treasures 兔子兄妹来划水,游戏的操作非常简单,方向键躲避各种障碍,空格键跳过障碍,同时注意路上可以收集的宝物
The special concern being attached to the promotion of tourism in sudan is necessitated by many factors represented in the necessity of activating domestic internal tourism , notably among the youths to familiarize with their country 其表现为连绵700多公里的红海海岸，尤其以小船-划船、划水、潜水、水下摄影等许多旅游项目为代表。
For getting the runner characteristics more correctly , researching the representation of runner characteristics of the kaplan turbine in this paper , and using this method of modifying runner characteristics to calculate the transient of hydraulic power station . improving the calculating model of the axial thrust in the kaplan turbine ' s transient . base on the theory of screw propeller without any boundary , using the theory of screw propeller with pipe , and the formula to calculate the dynamic axial thrust during transient is developed 本文对转桨机组在过渡过程中的桨叶划水产生水推力的数学模型进行了改进，在原来使用无边界螺旋桨进行等效的基础上，使用了导管螺旋桨对转桨机组中的桨叶划水进行等效，并且比较详细的分析了影响转桨机组轴向水推力的各个因素，以及给出了动态计算轴向水推力的公式，通过计算表明，使用改进后的动态水推力计算模型得到的结果能较好的反应实测的动态轴向水推力。
