查询词典 three-wire system

By taking cotton fiber in high yield cotton field of north Xinjiang as the object, the niche-fitness theory were introduced, through analysis the niche-fitness of cotton fiber in three mono-topping and multi-topping intercrop system treatment, the result showed, it is acceptable that evaluate cotton fiber quality by niche-fitness, the niche-fitness value of cotton fiber at the middle part of the cotton plant is the biggest that topping inJul.10th and Jul.25th in this three treatment, moreover, with the increase of topping times, compare with it's top part of cotton plant, the niche-fitness of cotton fiber at the low part of cotton plant have a raise tendency, the niche-fitness value of top and low part of cotton plant in multi-topping treatment is bigger than what of mono-topping.

以北疆高产棉田棉纤维作为研究对象，引入生态位适宜度理论，对三个打顶次数不同的处理的棉花群体棉纤维生态位适宜度进行分析研究，结果表明：用生态位适宜度来评价棉纤维品质是切实可行的，三个打顶处理中7月10日和7月25日打顶棉株棉纤维生态位适宜度均为中部最高，并且随着棉花群体打顶次数的增加，其下部棉纤维生态位适宜度较上部有逐渐增高的趋势，与一次打顶相比较，其二、三次打顶棉株上、下部棉纤维生态位适宜度均升高。

While the idea and the prototype of the three-degree-of-freedom motor came into being, it is more convenient to realize the motion of the robot joint where the demand on workspace is low but three DOF is required. It also combines the merits of simplified system construction, minimized machine volume, improved dynamic and static performance with high position accuracy.

三自由度球形电机设计概念及样机的出现，使得机器人关节的空间三维运动可以在一个较小的工作空间中完成，简化了系统结构，减小了机构体积，有利于提高系统的动、静态性能和定位精度。

To fly to the solar system space probes to other planets whose flight can be roughly divided into three stages, namely, from launch to the Earth's scope is not out of phase, out of the scope of the Earth's role in the transition phase, when mainly affected by solar gravity and scope to the target planet is the first three-phase, after which the planet could be captured by the target satellite, or left the target planet became the man-made asteroid.

飞往太阳系其他行星的空间探测器其飞行大致可分为三个阶段，即从发射到未脱离地球作用范围阶段，脱离地球作用范围的过渡阶段，这时主要受太阳引力作用，进入目标行星作用范围是第三阶段，此后可能成为被目标行星俘获的卫星，或者飞离目标行星后成为人造小行星。

It is pointed that the study of the small-scale natural gas liquefier is a system project mainly including three aspects: the liquefaction flow design and simulation, the liquefaction equipment design and chose type, the liquefaction fitting testing and modification. Further analysis is given about the three aspects.

指出小型天然气液化装置的研究是一项系统工程，主要涉及到三方面的内容，即液化流程设计和模拟、液化设备设计和选型、液化装置调试和整改，并对这三方面进行了深入分析，认为针对小型天然气液化装置的低温理论和技术的发展将提高小型天然气液化装置的效能。

The observational equations have been derived using the three methods above which are based on high-low SST and low-low SST observational data respectively, at the same time, the shortages and merits of these three methods are analyzed. 3The problem of gravity field recovery can be attributed to the solution of over determined system of equations.

本文分别以高低卫卫跟踪和低低卫卫跟踪观测数据为基础，导出了基于上述三种方法的观测方程，并分析了它们的优缺点。3重力场恢复最终归结为超定线性方程组的求解问题。

Tuning the three parameters K_p, K_i and K_d on line. Some control difficulties due to the nonlinearity and model uncertainty of BLDC motorize recovered effectively. Tune the three parameters of PID controller to ameliorate the performance of control system.

对PID控制器的三个参数K_p，K_i和K_d进行在线调整，有效地克服了由无刷直流电机的非线性、参数时变性、模型不确定性等引起的控制难的问题。

There are three kinds of source rocks and three periods of pool formation in the multiple petroleum system of Eocene and Oligocene in the Jiyang Basin.

以这三套生油层系为核心，三个成藏期为标志，形成了复式含油气系统。

The 60kVA three phase photovoltaic grid -connected power system made of three single phase 20kVA photovoltaic grid -connected power equipment based on technology of parallel combined shift phase PWM have been operated.

以移相PWM并联组合技术为基础，采用3 个单相20kVA的光伏并网发电装置组成60kVA三相光伏并网发电装置，已投入运行。关键词：光伏并网；功率组合技术；移相PWM；电流跟踪

A compound hydraulic system with variable frequency control, a throttle and variable displacement speed control was established. Using AMESim software, the vector control three phase asynchronous motor simulation model was established based on the analysis of the principle of three phase asynchronous motor simulation.

本文将节流调速和变频液压技术有机地结合起来，以解决变频液压容积调速在大惯量、低转速、变负载系统中的应用问题，利用AMESim软件建立了矢量控制的变频液压容积节流调速系统仿真模型，并对该系统进行了性能仿真。

First fitting the projective straight line in three rectangular coordinate system,second obtaining the straight line equation in space through the projective straight line,and comparing three different straight line equations,finally choosing the best fitting program.

先拟合三个直角坐标系中的投影直线，再通过投影直线求出空间直线方程，并对拟合出来的三个不同的直线方程进行比较，选择最佳拟合方案。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。