直

Moreover, they are not suitable for gears manufactured by different cutting tools. Based on gear generation principle, a new method to establish accurate 3D solid model of cylindrical gear by mechanism function of Pro/E is proposed. Taking the manufacture of spur-gear with pre-grinding hob as an example, this method is introduced in details and the accurate 3D solid model is set up.

以范成法加工齿轮的原理为理论基础，介绍在Pro/E平台下利用其机构模块的"轨迹曲线"功能精确构建各种刀具加工出来的渐开线圆柱齿轮齿廓曲线的方法，并以磨前滚刀加工直齿圆柱齿轮为例，详细介绍该方法的使用步骤，构建其精确的三维实体模型。

The results indicated that good wavelength stabilization could be obtained when a collimating cylindrical lens with diameter of 0.4 mm was used.

研究表明，在相同的工作电流、热汇温度下，当准直柱透镜直径为0.4 mm时的波长稳定效果较好；在此情况下，当热汇温度控制在30 ℃，工作电流从0.5 A增加到1.5 A的测量范围内，以及当工作电流固定在1.5 A，热汇温度从20 ℃增加到35 ℃时，测得的光谱特性表明，半导体激光器的工作波长可以很好地稳定在体布拉格光栅的布拉格波长处。

Finally, the shape factor for an underground vertical cylindrical surface and the designing method of the well heat pump is introduced.

第七章从理论上给出了土壤中竖直圆柱导热的形状因子，并以此为依据初步探讨了井水热泵的设计方法。

It is solid, straight, cylindrical and very muscular.

它是固体，直，圆柱和非常肌肉。

Applying the classical method,using anisotropic rectangular coordinates,this article educes the field strength expression by electrified cylindroid and cylindrical surface as well as infinite straight lead in linear anisotropic homogeneous dielectric.

应用各向异性直角坐标系的概念，借助经典的定理 E =- xΦ，导出了带电椭圆柱面、圆柱面、无限长直导线在线性各向异性均匀电介质中的场强表达式。

The studyshows that Chetaev's model for mechanicalsystems with non-holonomic con-straints can be reduced to three essential factors:(1)a kind of direct sum ofjet bundles according to the constraints,(2)D′Alembert's principle,(3)pos-tulate of ideal constraints.The first among the three factors only has geomet-ric significance and the second is a fundamental physics principle independentof any constraints.

研究表明，非完整约束力学系统的Chetaev模型归结为三个要素：(1)射丛按约束的直和分解；(2)D′Alembert原理；(3)理想约束条件，其中(1)仅具有几何意义，(2)为与约束无关的基本物理原理，而(3)是对约束力学系统的限制条件。

Routing is fast and easy, even for small dado grooves with a straight bit.

路由既快速又简单，即使对那些墙裙直有点小沟槽。

Beyond this flood a frozen Continent Lies dark and wilde, beat with perpetual storms Of Whirlwind and dire Hail, which on firm land Thaws not, but gathers heap, and ruin seems [ 590 ] Of ancient pile; all else deep snow and ice, A gulf profound as that Serbonian Bog Betwixt Damiata and Mount Casius old, Where Armies whole have sunk: the parching Air Burns frore, and cold performs th' effect of Fire.

V2：从此他们比以前安心了，被这个缥缈的希望所鼓舞，大天使们纷纷散去，各自分途，心中闷闷，何所追求何所向，感到纷乱迷惑，各自去找一个最喜爱的地方来休息，使不安的思想有个着落，消遣这苦闷时光，直等到他们伟大将领的回来。

All darts, whether they are shaped or straight, consist of two sides.

所有的省道，无论它们是曲的还是直的，都有两条边组成。

The relative space relationship of the datum line and mask is represented by the beam from GRIN lens .

利用自聚焦准直镜的出射光束反映基准线与模板的相对空间关系。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。