扇形

Thistype of snowflake, called a sectored plate, forms when the temperatedips below about 5 degrees Fahrenheit (-15 degrees Celsius).

这种雪花型叫做盘子状扇形雪花，它在摄氏负十五度时形成。

The stellar dendrites you see here are the largest forms of snow crystal and perhaps the most beautiful, with the sectored plates coming in a close second, but there are also less photogenic simple prisms, columns, bullet shapes and needles and crystals that combine different types.

这里看到的星状树枝雪晶，是雪晶中个头最大，可能也是最漂亮的，有瞬间凝成的扇形分割星盘状躯体，有时也呈现简单的棱柱形、圆柱形、弹头形、针形和各式不同形状组合，只是镜头不易捕捉到。

These assessment checklists are divided into major sectorial areas. They are meant to be as inclusive as possible of the types of questions that need to be answered in initial assessments of various disasters.

这些评估清单分为主要的扇形地区，它们是为了尽可能地对各种不同灾难的初步评估，提供需要解决的可能包括的问题。

This method is an approach of precise solution and has some applicational value in design of prismatic bars with sectorial cross-section in engineering.

这种方法为精确解法，在各种机械及其他工程设备中，对受扭转作用的扇形截面杆设计，有一定实用价值。

These assessment checklists are divided into major sectorial areas. They are meant to be as inclusive as possible of the types of questions that need to be answered in initial assessments of various disasters.

这些评估清单分为主要的扇形地区，它们的意思是尽可能的对具有包容性问题，加以回答，再初步评估的各种灾害。

A torsion difference scheme of the bar with sectorial cross-section is developed in polar coordinate system .

导出了极坐标系下扇形截面杆件扭转问题的差分格式；用逐次超松驰迭代法求出了扭转应力函数差分值。

In this paper numerical simulation on the mechanical expanding process of line pipe is made by means of elastic-plastic FEM analysis software-MARC. The influence of sectorial angle on deformation characters is especially analyzed, and some useful results are gained.

本文运用大变形弹塑性有限元分析软件MARC，对管线钢管机械扩径过程进行了数值模拟，著重分析了扩径模具的扇形角对扩径过程的影响，得到了一些有益的结论。

The two programs are Harmonics.m , which plots low order harmonics and Sectorials.m , which plots high order sectorial harmonics.

两个程式分别是 Harmonics.m 和 Sectorials.m ，前者用於绘制低阶简谐波，后者用於绘制高阶扇形简谐波。

In addition,the domestic production situation was presented.Both design and manufacturing of the sectorial drum of the reforming reactor as well as the shell and tube exchanger were successfully accomplished with the collaboration of engineering institute,manufacturer and client.Particular equipment and technologies for manufacturing were developed.Difficulties in entirely revering,butting and strengthening of slotted tubes in reactor were solved.

设计单位与设备制造单位和用户密切合作，顺利地完成了重整扇形筒和列管式立式换热器的设计与加工；开发了专用加工设备和特殊的加工工艺，解决了反应器开口接管的整体翻边对接补强难题；在安装过程中确保了反应器壳体椭圆度与中心管的垂直度。

Leaves needlelike, slender or stout, straight or twisted, triangular, flabellate-triangular, or semiorbicular in cross section, stomatal lines several, on 1, 2, or all surfaces, vascular bundles 1 or 2, resin canals 2-10 or more, marginal or median, rarely internal, base enclosed by persistent or deciduous, membranous sheath. Pollen cones usually borne in spikelike clusters at base of 1st-year branchlets, sessile, cylindric or ovoid; pollen 2-saccate.

叶针状，纤细的或粗壮，直的或扭曲，三角形，扇形三角形，或半圆形在横断面上，气孔线数个，在1，2上，或全部表面，在第1 年的小枝，无梗，圆筒状的或卵球形的穗状的簇生在基部里的雄球花通常着生；花粉2囊。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。