查询词典 lemniscate

In this design four-bar the position puts against coal powered support ZFS10000/25/45. It consists of canopy, base plate, caving shield, hydraulic legs, front and rear lemniscate bars and so on.

本次设计的四连杆中位放顶煤液压支架ZFS10000/25/45，有顶梁、底座、掩护梁、立柱、前后连杆等几部分组成。

Based on specific requirement for the top-coal caving mining to the four-bar linkage ,a design method of the four-bar linkage is put forward in the paper in which the least difference function between the lemniscate locus and the power function curve is used as the main objective function.

基于综放工艺对支架四连杆机构的特殊要求，首次提出以双纽线与幂函数曲线之差值最小作为主要目标函数的数学模型，并在此基础上应用VisualBasic5 0编制了四连杆机构的优化设计程序，可以同时实现优化参数显示与优化结果的动态显

The shape of the Bookshelf is a lemniscate—a figure 8 and the mathematical symbol of infinity, which is so perfectly combined with the notion of the infinite potential and lasting power of books.

书架的造型是一个双纽线，由数字8和数学符号的无穷大组成，这一如此完美的结合展示了书籍所有的无限潜力和持久力的概念。

It has long ram-like horns that twist in the form of a lemniscate, the symbol of infinity, and its eyes burn with a fierce inner light, though the area around it is always covered in shadows.

它有很长的弯曲的角，象征着无限性，它的眼睛内部燃烧着凶恶的光芒，尽管它经过的地方周围都被阴影覆盖。

Exhibits a rare structure of a meso-helix which is a 3D presentation of a lemniscate. 14 and 15 are isomorphic one-dimensional helical structures.

化合物 14 和 15 同构，它们都是由金属离子和3，5－二硝基水杨酸的羧基组成的一维螺旋链结构。

On the basis of the data base of powered support, this paper presents a useful kinematic analystical method of powered support's lemniscate linkages with one-dimension optimum method (the 0.618method), and a related compu -ter programme is worked out.

本文在液压支架主要结构尺寸数据库的基础上，研究了以支架任意工作高度H为自变量，以一维优化法(Q.618法)为依据的液压支架四连杆机构运动学分析的实用方法。

In this design four-bar the position puts against coal poweredsupport ZFS10000/25/45. It consists of canopy, base plate, cavingshield, hydraulic legs, front and rear lemniscate bars and so on.

本次设计的四连杆中位放顶煤液压支架ZFS10000/25/45，有顶梁、底座、掩护梁、立柱、前后连杆等几部分组成。

Powered support ; lemniscate linkages ; optimum ; kinematic analysis

液压支架；四连杆机构；优化；运动学分析

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。