直径的

The noise level must be measured at a distance of 3m (3 metre) while the helicopter is hovering with the skids/landing gear at 2m over the centre of a 2m diameter circle.

测量噪音水平必须在比赛开始之前，最好在当天的官方做法，噪音必须加以测量，在距离为 3米（3metre），而直升机悬停於2米直径的圆圈上方，高度为2米。

The aerodynamics characteristics and the flow structure of the circular cylinder with an upstream rod in tandem were examined.

通过风洞测压和水洞流动显示实验，研究了不同直径的扰动体尾迹下圆柱的流动结构和气动特性。

As to the property of its cutting and modeling, GH4169 is characterized by high intensity, high plasticity, great resistance to cutting, serious cold-work hardening, high-temperature cutting, serious abrasion of the cutting tool.

其切削加工特点主要表现为强度高，塑性大，切削抗力大，冷作硬化严重，切削温度高，刀具在加工过程中磨损剧烈，以攻丝为加工最难点，小直径的螺孔用普通攻丝方法几乎无法加工，已经严重影响了公司的生产进度和产品质量。

From TEM bright field image, it can be seen that the surface image of CoPt formed discrete islands, and gradually change to continuous film as the CoPt thickness increase. After annealed at 700℃ for 30 minutes, the single domain state is found by the observation of MFM images at 7.5 nm CoPt. At single domain state, the variation of coercivity with particle size agree with the theory of single domain particles.

由TEM平面明视野影像可以看到，随著CoPt厚度的增加，其表面型态由不连续岛状结构逐渐转变为连续膜，从MFM图可以发现於700℃退火30分钟之CoPt(7.5 nm)为单磁区状态，在此单磁区状态其矫顽磁力随颗粒直径的变化符合单磁区理论。

It mainly and fixes by a steeliness cuboid in its both sides two same diameter steel circular cylinders is composed.

它主要由一钢制长方体和固定在其两端的两个相同直径的钢圆柱体组成。

Cupule bracts not spiny; cupules less than 5 cm in diam.; leaf blade rarely to 30 cm.

Cupule 苞不多刺；壳斗5厘米直径的不到；很少的叶片到30 厘米 12

Cupule bracts inconspicuous or ± united into a few concentric rings; nut scar rarely more than 6 mm in diam.

不显眼的Cupule 苞±合并成一些同心戒指；坚果痕很少6毫米直径的超过 58

The ratio of the circumference to the diameter of a circle. They can be

1.26，或许你喜欢Π，这个比例是直径的周围就是个圆，它可以恰当的夸大

Objective: To observe the pupil diameter changes of different diopter under different rays.

目的： 观察不同的屈光度在不同光线下瞳孔直径的变化。

The equilibrium values of the diameters of dispersed phase droplets are calculated.

被分散的阶段小滴直径的平衡价值被计算。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐