To reduce the weight of the whole reducer , the fea software ansys is adopted for the shape optimization design of the ring - plate in the double crank four ring - plate cycloidal pinwheel reducer and a good result is achieved 为了减轻整机重量，采用有限元分析软件ansys对双电机驱动双曲柄四环板摆线针轮式减速器中的环板进行了形状优化设计，得到了良好的效果。
For the vertical - axis variable - pitch cycloidal rotor , the article unify hydrodynamic performance symbol at first , classify and trim the calculation methods and formula of predicting fluid dynamical capability of water - power rotor and wind - power wheel that have been formed up to now 对于可调角直叶摆线式水轮机，首先统一定义了水动力性能符号，将已有的水力与风力转轮的流体动力性能理论计算方法和计算公式进行分类和整理。
The analysis result shows that the whole system could reach not only a static balance hut also a dynamic balance at all time because of the special phase angle relation , it keeps all the advantages of the traditional cycloidal - pin wheel planetary gear train 分析表明，由于四片环板采用了特殊的相位角关系，整个系统不仅能够达到静力平衡，而且能达到任意时刻的动平衡，同时又保留了摆线针轮行星传动的优点，是一种具有发展前景的传动形式。
Then , the methods that have been used to the vertical - axis variable - pitch cycloidal rotor are applied and the corresponding calculation formulas are formed . finally , the numerical results are presented and compared each other but yet they need farther examination and validation 首先给出了一种阻力型计算方法；然后将计算摆线式水轮机的各种方法推广应用于蹼板式水轮机，得到了相应的计算公式；最后给出了数值结果，并进行了比较研究。
Aimed at the now broadly existed problems of unevenness of powers transmitted by left and right cycloidal gear of cycloidal pinwheel reducer , a detailed analysis was carried out theoretically , a corresponding calculation method was established and concrete suggestions for improving the design was put forward 摘要对目前广泛存在的行星摆线针轮减速机左右摆线轮传递功率不均衡问题，从理论上进行了详细分析；建立了相应的计算方法；并提出了改进设计的具体建议。
At the anaphase of cultured , the bacteria exsist as a cycloidal dormancy body - sporocyst , and the decomposing rate of filter - paper began to decrease . we know the sporocyst is a form that sporocytophaga genus appear in a ill circumstance , so we think the sporocyst did n ' t have the cellulose decomposing activity . after cultered 96 hours , we can found many sporocysts and filter - paper slices in the fermentable liquid 并且这一时期的滤纸降解率开始降低，证明小孢囊并不与纤维素的旺盛降解有关。培养96小时后，滤纸纤维素被降解成碎屑，液体培养基中有大量孢囊存在；培养6 ? 7天后该菌可以将滤纸纤维素完全降解。
