查询词典 spiral drill

The central point of the spiral on a seashell is theoretically infinite, but nevertheless you can clearly define the end of the seashell's spiral.

换言之，贝壳的螺旋中央，理论上是无限的，不过你可以清楚的定义贝壳螺旋的结束点

The system is stable planar combustion model when the diluent content is less than 6wt%; The system is unstable single-point spiral combustion model when the diluent content is in the range of 6wt%～25wt%, and the time of spiral point around sample one time is the same.

当稀释剂含量低于6wt％时，体系燃烧为稳定平而燃烧；当稀释剂含量在6wt％～25wt％范围内，体系为单点螺旋燃烧，螺旋点围绕试样旋转一周的时间相同。

In this spiral spring time, each person's behind all as if excellent disciple spiral spring

我们要的究竟是什么？在这个发条的时代，每个人的背后都似乎上足了发条

This paper analyses the relation of the tolerance , strength and rigidity of cyinder spiral spring and gives a method for calculating the tolerance of cylinder spiral spring.

在分析圆柱螺旋弹簧尺寸公差的可靠性条件和刚度的基础上提出了一个计算圆柱螺旋弹簧尺寸公差的方法。

The uncertain parameters of cylindrical spiral spring fatigue strengthen analysis are analyzed and described as interval variables, and an interval analysis model is established, and the non-probabilistic reliability index of cylindrical spiral spring fatigue strengthen is presented.

分析圆柱螺旋弹簧疲劳强度分析中的不确定性，将圆柱螺旋弹簧设计中不确定参数描述为区间变量，建立圆柱螺旋弹簧疲劳强度非概率可靠性分析的区间模型，提出圆柱螺旋弹簧疲劳强度非概率可靠性的指标。

Results show that there is much local secondary flow in square cyclone besides main vortex, such as spiral down-stream near surface and spiral up-steam at central zone.

结果表明：方形分离器内除外涡旋与内涡旋等主流外，还存在许多局部的二次流，这些二次流是影响分离器的分离效率的主要因素之一；结构参数的变化对二次流的强度及位置产生影响，进而影响分离器的分离效率。

Results show that there is much local secondary flow in square cyclone besides main vortex, such as spiral down-stream near surface and spiral up-steam at central zone. The secondary flow is one of the effect factors on the collection performance of square cyclone. The cyclone geometry size affects on the intensity and the position of the secondary flow, and then affects on the separation efficiency of the cyclone.

结果表明：方形分离器内除外涡旋与内涡旋等主流外，还存在许多局部的二次流，这些二次流是影响分离器的分离效率的主要因素之一；结构参数的变化对二次流的强度及位置产生影响，进而影响分离器的分离效率。

Spiral stair cases ; three dimensional modeling ; spiral surface ; straight-grained surface ; AutoLISP program

螺旋楼梯；三维建模；螺旋面；直纹曲面； AutoLISP程序

The floral primordium is initially circular, along with the edge of which slight concaves occur. The outmost whorl of tepal primordia arises as a result of apical meristem division and the floral primordium then is in the shape of triangle. Two further whorls of tepal primordia arise in spiral acropetal sequence and are alternately arranged. When the innermost whorl of tepal primordia is at the late developmental stage, the foremost stamen primordia arise almost simultaneously in spiral acropetal succession and all of the stamen primordia are ultimately arranged in a triangle-cone form. Late in stamen primordium development, carpel primordia arise as same as the young stamen primordia and grow laterally. Grooves are present on the adaxial side of each carpel and develop into ventral sutures gradually closing up.

观光木的花原基最初为近圆形，随着顶端分生组织的活动，花原基边缘处出现浅凹，形成第一轮花被片原基，此时，花原基呈三角形排列，后两轮花被片原基依次发生，与前一轮互生；在内轮花被片发生的后期，最初几枚雄蕊原基几乎同时出现，呈螺旋状向顶发生，最后排列成三角圆锥状；雄蕊原基发育后期，心皮原基开始发育，形状与发育初期的雄蕊原基相似，随后心皮原基进行侧向生长，在近轴面出现浅凹，进而发育为凹槽，形成腹缝线，最后腹缝线完全愈合。

Based on the analysis,advance a method of designing and processing modification spiral bevel gear and design a new type of cutter are put forward.By the local synthesis method,the mesh quality of the modification spiral bevel is researched.

在此基础上，提出了一种修形弧齿锥齿轮的设计加工方法，并设计了新型加工刀具，此外，还借助于局部综合法，研究了修形弧齿锥齿轮的啮合质量。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"