查询词典 planetary

But this well-studied example of a planetary nebula, produced near the end of the life of a sun-like star, is now understood to have a surprisingly complex geometry.

但事实并非如此。螺旋星云事实上已经是已被广泛研究的行星状星云的很好的例子。它是类太阳恒星在寿终时所演变成的。

An actual invasion was too much to hope for-a chance to see for herself those well-concealed planetary defenses everyone talked about.

这也不会是一场真正的外来入侵，否则戴娜就有机会亲自看到那些没有人都在谈论的经过精心隐藏的行星防卫系统。

Travel mechanism of each track consists of a variable two-speed piston motor, a planetary reducer and a parking brake, travel brake buffer valve is mounted on motor to reduce hydraulic shock.

每侧履带的行走机构由一个变量双速柱塞马达、行星减速器和制动器组成，行走制动缓冲阀与马达一体安装，吸收了行车时由于制动或载荷变化带来的液压冲击。

According to the arrangement and number of rolls, rolling mills can be classified as various types: a two-high mill, a three-high mill, a fourhigh mill, a planetary mill and a cluster mill.

根据轧辊的配置和数量，轧机可分为各种类型：两辊式轧机、三辊式轧机、四辊式轧机、行星式轧机和多辊式轧机等。

Because of the fact, the bearing capacity of the whole drive cannot be developed well enough. To improve the performances of the load-capacity, transmission efficiency, and reliability of mechanical drive, we originally developed some designs of the double crank ring-plate-type cycloid planetary drive. The new-type drive keeps all the natural advantages, which is of multi-tooth mesh, small mesh angle, and hardened tooth flank of gears. Moreover, The drive does not need the special output unit as the ring-plate-type drive does, so that the rigidity of the output shaft becomes much higher. Since the tumbler bearing is placed outside the cycloidal gear, the size of the bearing is no longer restricted to any extent.

为大幅度提高其承载能力、传动效率和可靠性诸指标，我们创新研究出来的多种结构双曲柄环板式针摆行星传动，其特点是不仅保留着原摆线针轮行星减速器同时啮合齿数多，总法向力与总圆周力间夹角小，摆线轮与针轮齿均为硬齿面等本质上的优点；而且又具有环板式传动省去输出机构且输出轴刚性好，转臂轴承移至行星轮外，从而传递的转矩可以成倍提高的优点。

Cutting Part 4 used to drive before three straight tooth drive, the fourth level of planetary transmission.

截割部采用四级传动前三级为直齿传动，第四级为行星传动。

Planetary gear transmission, compared with ordinary gear, it has many unique advantages.

行星齿轮传动与普通齿轮相比较，它具有许多独特的优点。

In this paper,a method is introduced in detail to design the gear plan of planetary gear transmission mechanism .

介绍了利用杠杆分析法进行行星齿轮变速机构方案设计的过程及方法，对汽车自动变速器的设计具有一定的指导意义

Finally, according to the theory in this article and the demand of engineering, the software system has been developed for load sharing analysis of planetary gear transmission.

在软件开发中，确定了该软件的总体结构和功能要求，对各模块的设计开发进行了说明，该软件具有良好的人机对话界面。

The type-spectrum-chart of tow-row planetary gear train is plotted. Discussing the two examples in the type-spectrum-chart, two schemes of the five-shift transmission are obtained.

用约束矩阵形成挡位矩阵，分别针对型谱中一元联结和二元联结2种方式的结构型式实例进行传动分析，得到2种五挡双排行星齿轮变速机构的结构方案。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"