梯形

In order to solve this problem,the cross wing of diamond wing profile and isosceles trapezoid wing surface is designed which is of suitable size and smaller effect on projectile resistance.

因此，设计了外形尺寸合适、影响较小同时又能满足弹丸修正能力要求的菱形翼型等腰梯形翼面。

Based upon the general equations of a trans-versely isotropic foundation, the stress functions and the theory of Fourier transforms , the basie displacement so-lutions for a transversely isotropic body under horizontal concentrated loads are obtained.

根据横观各向同性体的基本方程，运用应力函数、傅氏变换和傅氏逆变换理论，得出了横观各向同性地基在水平集中荷载作用下的基本位移解，然后利用积分的方法分别得出了横观各向同性地基在条形面积上水平均布荷载、水平三角形分布荷载及水平梯形分布荷载的位移计算公式，并利用实测的一组弹性参数，将横观各向同性地基中的相对位移与现有的计算理论给出的各向同性地基中的相对位移通过图形作了分析比较，得出了一些有益的结论，以供岩土工程设计人员参考。

But the lesser-known and visited Keystone is growing in popularity and is beginning to be discovered.

但鲜为人知的，并参观了梯形的日益普及，并开始被发现。

A long tapering spar slung to a mast to support and spread the head of a square sail ,lug sail ,or lateen.

帆桁吊在桅杆上一头渐细的长柱，用来支撑和展开横帆、梯形帆或三角帆的顶端

It is pointed out that the inherent reason of the leakage is that the buttress thread is adopted, and the outer reasons of the leakage lie in poor quality sealing ring being used, the design of sealing groove being unreasonable, and the thread sealing compound failing at 350℃.

指出偏梯形螺纹连接本身存在较大的泄漏通道，是造成泄漏的内在原因；工厂为弥补这一缺陷而设计的密封圈质量较差、密封槽设计不合理，以及所使用的螺纹脂不耐350℃高温，是造成隔热管泄漏的外在原因。

The changes in PAL and PO activity and in cellulose and lignin contents were studied. The results indicated that the activities in PAL and PO and contents in cellulose and lignin increased by a big margin, and the course of lignification was moved forward from shoot base to top.

结果表明：PAL和PO活性以及纤维素和木质素的含量从基部向顶部逐渐降低，呈梯形分布，木质化进程是从基部向顶部推进的；竹笋离体后，PAL和PO活性大幅度增高，纤维素和木质素含量大量增加加速了老化进程。

Apparatus CO2、Gas bottles、Calcium carbonate（CaCO3）、dilute hydrochloric acid、 Candles、Beaker、purple litmus solution、clear limewater, etc

制二氧化碳装置一套、集气瓶、碳酸钙、稀盐酸、小蜡烛两支、带梯形铁片的小烧杯、紫色石蕊试液、澄清石灰水等。

This paper analyzes the example of design PLC ladder diagram by predicate logic method,and illuminates relative merits.

使用谓词逻辑法举例分析PLC梯形图的编制过程，并分析其优缺点。

The main task of this graduation design is to exploit the procedure that according to PLC elevator system, For this, I design the trapezoid logic diagram of the elevator system, proceeding the emulation of the movement with the software of trilogl.

本次毕业设计的主要内容是开发基于PLC的4层电梯系统程序，为此，我设计电梯系统的梯形逻辑图，用trilogl软件进行了运行的模拟。

The thesis first recommends the famous fuzzy Gaussian approximation system which is based on the Gaussian membership function, the fuzzy logic of product reasoning and the fuzzy law of weight approach. This thesis is discusses the general fuzzy Gaussian membership function that can approximate the form of triangular, trapezoid and Gaussian function , and its basic form is .The general fuzzy Gaussian membership function is to be generally used in the field of approximation .

模糊逼近是近年来发展比较迅速的一个新兴方向，论文首先给出了模糊理论中著名的基于高斯隶属函数、乘积推理模糊逻辑和重心解模糊法的模糊高斯型万能逼近定理，在此基础上本文进一步给出了可以用来逼近三角形、梯形和高斯形的广义高斯隶属度函数形式，它的基本形式是。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。