梯形的

Shouldered nuts ; metric fine thread , rounded acme thread

带肩螺母。米制细牙螺纹。圆的梯形螺纹

The finite element models for contact problems of connectors of buttress and round thread s of casing are established with the elasto-plastic FEM.

用弹塑性有限元法建立了套管偏梯形和圆形螺纹接头接触问题的有限元力学模型。

Finite element dynamic mode is established for API casing leaning thread contact by using elasticand plastic infinite element.

用弹塑性有限元法，建立了API套管偏梯形螺纹接头接触问题的有限元力学模型。

Modern ways of controlling acceleration and deceleration can be divided into the trapezoidal speed curve and the S-shaped speed curve.

通过对梯形速度曲线与S形速度曲线的比较，可知S形速度曲线在减小冲击和振动方面更具有优势。

Unlike the core polygon request, this request will be able to draw many trapezoids at a time.

与核心多边形请求不同的是，此请求还能一次绘制多个梯形。

In "Eighth Five-Year Plan" and the "Ninth Five-Year Plan" period, satisfaction degrees increased gradually, the growth of Xinjiang's agricultural economy transitted from extensive type to intensive one.

通过建立新疆农业经济增长满意度指标体系，引入递增满意函数、梯形满意函数及其阈值，计算出新疆各地州1991，1996，2001年相应指标的满意度。

Our main products include various oil-tempered steel wires, high quality carbon spring steel wires, piano wires, alloy spring wires, carbon structural wires, alloy structural wires, tool wires, cold heading steel wires, free cutting steel wires and alloy welded wires, along with precise special-shaped steel wires with various sections such as rectangle, square, trapezium, semicircle, triangle and drum.

北京兴发威尔金属制品有限公司主要产品有：各类油淬火一回火钢丝，优质碳素弹簧钢丝，琴钢丝，合金弹簧钢丝，碳素结构钢丝，合金结构钢丝，工具钢丝，冷顶锻用钢丝，易切钢丝，合金焊丝以及各种断面形状的，如矩形、方形、梯形、半圆形、三角形、鼓形等精密异型钢丝。

Corolla blue-purple, ca. 3 mm, parted to lower 1/3; throat appendages trapeziform, ca. 0.5 mm; limb 3-5 mm wide; lobes ovate-orbicular, apex retuse.

花冠蓝紫色，约3毫米，对更低的1/3深裂；喉附属物梯形，约0.5毫米；瓣片3-5毫米宽；裂片卵形圆形，先端微凹。

In particular, the special-shaped, tapered, spherical roof of the song panel, the board has a ladder leading development capability.

尤其对异形、锥形、球形屋面的曲面板、梯形板有着领先开发能力。

In these cases, you may wish to use an extension tube with the mount to keep the image from appearing too high on the wall. We don't recommend tilting and using keystone correction on any 720p projector since it causes all signals, and native HD 720p in particular, to be rescaled.

在这些情况下，你可以考虑使用伸缩管进行吊装从而避免图像在墙面上显示过高（我们不推荐在任何720p 投影机上使用倾斜安装并使用梯形校正，因为这种方式使得所有信号，尤其是高清720p 信号，被重调（ dupin 注：不清楚此处 rescaled 的确切含义））。

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。