查询词典 concave polygon

The results show that the degassing efficiency increases with the residence time increasing;when other parameters are certain, the degassing efficiency increases with the number of arris and the concave depth increasing;the degassing efficiency decreases with the angle increasing.

结果表明：脱气效率随着滞留时间的增大而增大；当其他参数一定时，脱气效率随着棱数和凹入深度的增大而增大，随着角度的增大而减小。

The panel and back are flat, Guoqin body and inside the waist no concave angle.

其面板与背板都是平的，琴身腰部无角而往里凹。

The plasticity in a bas-relief is such that the features of a face in it can be prominent in both a convex and concave manner; what matters is that the extreme features are emphasized.

在一个可塑性的浅浮雕中也是如此，在那上面起着重要作用的脸部可以是凸的和凹的两个风格；所有起着极度重大作用的实质是强调音。

A plane with a concave blade for making moulding with beadwork.

有凹刃可以用珠缘来浇铸的刨子。

Biconcave:Concave on both sides or surfaces.

两面凹的：两侧或两面凹陷的。

Concave on both surfaces; biconcave.

双面均凹进的；双凹的。

This article outlines the progress of ancient Chinese lenses from the Pre-Qin Period to the Five Dynasties, and discusses mainly two arguments: First, the"yangsui" recorded and narrated in Lun Heng by Wang Chong of Eastern Han Dynasty may be a plano-convex glass lens; secondly, the"four mirrors" recorded and narrated in Tanzi Hua Shu by Tan Qiao of Southern Tang Dynasty may be a plano-convex lens, a biconvex lens, a transparent planeparallel plate and a concave-convex lens respectively, but what kind of tra...

本文概述了中国古代透镜从先秦到五代的发展进程，着重从古代文献和出土文物的研究出发，结合中国古代社会经济发展水平，论证了东汉王充《论衡》中记述的阳燧可能是玻璃平凸透镜；论证了南唐谭峭的《谭子化书》中记述的"四镜"可能是平凸透镜、双凸透镜、平光镜和凹凸透镜。作者认为《谭子化书》"四镜"段可能实际上是对中国古代透镜发展的阶段性总结。

According to the comparative research on Guangnania, the diagnosis of the zosterophytes is expanded. It is suggested that their sporangia have the differentiation in the shape (reniform, rounded/globose to vertically elongate), dehiscence and valves (biconvex or concave/convex).

根据Guangnania的研究和对比，对工蕨类植物的特征进行了扩展，认为孢子囊存在形状（肾形—圆形／球形—纵向伸长）、开裂方式和两瓣的分异。2。

Broken-rollers and stepless blad type double facer adopts combined structure which effectively overcometraditional low heat efficeency because of concave heat box when work,which improve work speed and qualit,decrease wasted board,especially suitable for light weight board.

其中碎辊式无级压载双面机采用碎辊结构，有效克服传统压载，因加热箱工作时下凹，导致热板上表面传热效率差的缺点，避免了传统压辊不平衡对纸板的冲击，从而提高了生产速度和质量，降低了废品率，更加适合克重纸板生产。

Perianth segments free, proximally becoming leathery and adaxially concave in fruit; anther appendage thick, not inflated and bladderlike, with 3 teeth.

花被片离生，在果期接近变得似皮革和正面凹；花药附属物厚，不膨大和囊状，具3齿。 42 Petrosimonia 叉毛蓬属

The teacher likes the honeymouthed little girl very much.

老师很喜欢这个嘴甜的小姑娘。

Mr. Notker Bien's interests are traveling, spending quality time with the family and long-distance-running.

诺特卡·柏恩先生热爱旅游，长跑，以及和家人一起共度美好时光。