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Two main types of muzzle brakes named baffle type and light weight type have been designed for carrying out the simulation and analysis of muzzle flow in this research. The utilizing of parameters from simulations and some given conditions to impact deflectors of muzzle brakes to make the recoil part get a momentum to move forward in order to lower recoil force have been expressed in this research as well.

中文摘要本研究以折流板及轻量化两种主要炮口制退器设计，进行炮口流场分析模拟，得到炮口周围之压力、气流速度、密度及温度等分布状况；并利用模拟所获得之数据配合已知之炮口条件冲击炮口制退器之折流板，造成火炮后座部份向前之动量，用以降低后座力，求出火炮装置炮口制退器后，以炮口效率为主之各项相关参数。

Between 1878 and 1884, some 15,000 Donggans emigrated from the Ili and Kashi regions of China's Xinjiang into the Seven-river region of the Mid-asian Russia, the main body of these Chinese immigrants being the remaining force of the anti-Qing Hui uprising army between 1862 and 1877 in northwestern China.

公元1878-1884年间，从中国新疆伊犁和喀什地区向俄国中亚七河地区迁去了1.5万东干人，其主体是1862-1877年西北反清回民起义军的余部。

The main products of the sticks is die-cutting on automatic die-cutting machine requires will rely on a pipe of knife more force several narrow-necked, smooth production after the die cutting machine out, in the sense of narrow-necked reflected in the die-cutting on the box of the edge is not smooth.

影响产品美观的主要原因是在平压平自动模切机上进行模切加工时需要将靠叼口边的刀多敲破几个小口，才能顺利地将模切后的成品从机器中拉出来，敲破的小口体现在模切后的盒上是边缘不光滑。

The sones fall into the high-speed turning impellers from the top of the machine.Under the function of high-speed centrifugal force,the stones crushed the others distributed around the impeller in the form of umbrella.After the stones impact each other,the eddying motion is formed between the impeller and main case to bring obout many times mutual impactind,rubbing,and crushing till the granularity required is achieved.

石料由机器上部直落入高速旋转的转盘，在高速离心力的作用下，与另一部分以伞形方式分流在转盘四周的石料产生高速度的撞击与高密度的粉碎，石料在相互打击后，又会在转盘和机壳之间形成涡流运动而造成多次的互相打击、摩擦、粉碎、直至粉碎成所要求的粒度。

The main character of the HVS is that, by means of fluctuating oil pressure, the pile-driving force can be changed in a higher frequency, and therefore better vibrating effect can be gained.

液压振动系统的主要特点是在桩机液压系统中的压桩油路产生流体压力变化和波动，从而使沉桩力出现高频的周期变化，产生振动压桩的效果。

The system construction of the military psywar force has taken the political organs and cadres as its main body for a lo...

长期以来，我军心理战力量体系的建设走以政治机关和政工干部为主体、发动全体指战员参加的非专业化道路，已不能适应形势发展的要求，应改革我军心理战力量建设模式，走人才培养开发的发展道路。

In this paper,the raft is approximated by a thin plate with regular shape at first.Then the floating raft system is divided into several subsystems,such as plate raft,elastic foundation,etc,which are respectively modeled by four-parameter net method.After that,dynamic absorber and active absorber are put into a uniform frame to obtain the model of plate raft subsystem coupling with them.At last,according to the force and velocity relationship among each subsystem\'s interfaces,the entire plate floating raft system is modeled by subsystem structural admittance synthesis method.As the main structure of floating raft system is elastic,it is inevitably to study the optimization of actuators\' mounting positions before designing control law.In this paper,two new criterions are proposed for it.

本文首先将浮筏的中间筏架用一个规则形状的薄板近似；然后再将浮筏系统分解成若干个子系统，如板式筏架子系统、弹性基础子系统等，运用四端参数网络建立了它们的动力学传递方程，传递特性由导纳矩阵描述；接着，将动力吸振器和主动吸振器的(来源：ABC90论文00网www.abclunwen.com)分析统一于一个框架内，获得了与吸振器耦合的板式筏架子系统的动力学传递特性；最后，根据各子系统在各界面上的作用力和速度的相互关系，通过子系统结构导纳综合方法获得了整个板式浮筏系统的动力学传递方程，并在此基础上获得了系统的力传递函数模型。

In squadron activities, a TIE/rc may range ahead of a main starfighter force and send back vital pre-engagement data.

在中队飞行时，TIE/rc战斗侦察机航行在主力战斗机前方，送回接敌前的重要数据。

Electronic expansion valve stepper motor is based on changes in the evaporator outlet pressure P1, the compressor suction Plug Valves superheat degree change in real-time changes in power output, the real-time output of the dynamics of change in time to overcome a variety of working conditions and the main expansion of load condition valve spring force changes, so that the valve opening to meet the evaporator, the demand Reducing Valves for fluid volume and thus the amount of fluid for the evaporator and the evaporator load in real-time match, that is, the electronic expansion valve can be set through the controller, man-made and effective control over superheat.

电子膨胀阀的步进电机是根据蒸发器出口压力P1变化、压缩机吸气过热度变化实时输出变化的动力，这个实时输出变化的动力能及时克服各种工况和各种负荷情况下主膨胀阀变化的弹簧力，使阀的开度满足蒸发器供液量的需求，进而蒸发器的供液量能实时与蒸发负荷相匹配，即电子膨胀阀可通过控制器人为设定，有效的控制过热度。

The desert and oasis Transition belt of Hetian River Basin belongs to the typical ecologically fragile belt. Wind power is the main driving force for land desertification and vegetation is the key determinants of land desertification.

和田河流域绿洲荒漠过渡带属于典型的生态脆弱带，风动力是该区土地荒漠化的主要动力因素，植被是该区土地荒漠化的重要决定因子。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。