查询词典 concave polygon

The results show that the concave structure ameliorates the surface stress distribution of the nonsmooth sample,makes the local stress between concaves less apparently than that of the smooth sample,that means the local low stress areas are formed on the nonsmooth surface.

结果表明：在受力状态下，仿生非光滑凹坑改善了试样表面的应力分布，使非光滑试样表面凹坑间的区域局部应力明显小于光滑试样表面的应力，即产生了局部低应力区。

This devise is a pair of reformed chopsticks,which could economize efforts and adds more efficiency through the ribs shape of design at the botton to have more contact faces and points between chopsticks and foodstuffs. It is easy to clip tiny or slippery foodstuffs just like noodles, beans or eggs. On the other hand, this reformed chopsticks is more convenient than the traditional one which is in a pole shape or have concaves on it. The reformed one need not adjust the concave side to cilp foodstuffs.

本创作是一种更省力且使用更方便的改良快子，藉由筷子夹持端之肋条状设计，增加筷子与食物间之接触面积与接触点，对於夹取面条、豆类或卤蛋等外径、体积细小或表面圆滑之食物甚为方便有效，相较於传统圆杆状或表面设有内凹沟槽之筷子，本筷子不仅夹持力更佳，使用时更不需刻意调整设有内凹沟槽之部位来夹持食物，使用上更为方便省力。

It use two disparting surface,and its frame is fast.It use point moulding gob,so,it can fall off automatism.When it is pulled out ,the pulling pole pull the product and accomplish the pulling of its side concave . The design project is divided into two parts. The first part is about the working theory and application of a plastic injection mould, the principle of designing and the introduction of the production about plastic mould.

它采用双分型面分型，结构紧凑；采用点浇口，且浇口可以自行脱落；顶出时，由推杆和斜顶杆顶出制品并完成制品内侧凹的抽芯；模具定模上的水道以多支回路分别冷却，动模一侧的型芯由三组水道分别冷却。

It use two disparting surface,and it's frame is fast.It use point moulding gob,so,it can fall off automatism.When it is pulled out ,the pulling pole pull the product and accomplish the pulling of it's side concave . The design project is divided into two parts.

它采用双分型面分型，结构紧凑；采用点浇口，且浇口可以自行脱落；顶出时，由推杆和斜顶杆顶出制品并完成制品内侧凹的抽芯；模具定模上的水道以多支回路分别冷却，动模一侧的型芯由三组水道分别冷却。

Ovary without nectaries or only with concave nectaries at base.

没有蜜腺或只具凹陷蜜穴在基部的子房。

Leaves 2--17 mm wide, margin smooth; ovary with concave nectaries at base.

叶2 --17毫米宽，边缘平滑；子房具凹陷蜜穴在基部。

Leaves flat; ovary without concave nectaries at base.

叶平； 没有凹陷蜜穴在基部的子房。

Inner filaments ovate at base, 1-toothed on each side; ovary with concave nectaries at base

内轮花丝卵形的在基部，1齿在每边；子房具凹陷蜜穴在基部 87 ALLIUM pevtzovii 昆仑韭

Ovary obovoid-globose, with concave nectaries at base.

球状子房倒卵球形，具凹陷蜜穴在基部。

Perianth red, pale purple-red, or purple-red; style not exserted; ovary without concave nectaries at base.

花被红，浅紫色红，或紫色红；花柱不外露；没有凹陷蜜穴在基部的子房。

According to our present broadcasting situation,the thesis proposes using new technology to update and reform the present HFC. It also suggests broadcasting using self-advantage and arranging EPON in order to win the supermarket.

论文从我国广电的现状出发，结合实际，积极倡导采用新技术更新、改造我国现有的HFC网络；倡导广电现阶段利用自身优势，部署EPON网络来赢取市场。

A new general kinetic equation was derived in which the effect of the removal of condensation water was taken into account completely, and was applied to the polyesterification kinetic study of AA/HPHP and AA/NPG. It was found that the reaction order of self-catalyzed polyesterification was not constant. For these polyesterifications, the reaction order was 2.5 at a low temperature, while 3.0 at a high temperature.

考虑缩合水的排除对反应体系的影响，用体积浓度单位推导出一个新的聚酯反应总包动力学方程，并应用到AA/HPHP和AA/NPG两个聚酯化反应的动力学研究中，研究发现，自催化聚酯反应的反应级数并不是固定值，对于AA/HPHP和AA/NPG两个聚酯化反应而言，低温时反应级数为2.5，高温时反应级数为3.0。