凹圓 的英文怎麼說

Danglars hazarded a look on both sides of the road, and perceived monuments of a singular form, and his mind now recalled all the details morcerf had related, and comparing them with his own situation, he felt sure that he must be on the appian way. on the left, in a sort of valley, he perceived a circular excavation. it was caracalla s circus

騰格拉爾大著膽子向路的兩邊望了一望，看見兩邊都是一式的紀念碑，馬爾塞夫那場冒險的種種細節在他的頭腦裏面盤桓著，他確信自己已被帶上了阿匹愛氏路上，在一塊象山谷似的地方，他看見有一個圓形凹陷的建築物。

Leaves bipinnate, 10 - 25 cm long, usually with 2 pairs of pinnae, rachis often ending in a tendril ; pinnae with 2 - 4pairs of leaflets and terminal tendrils ; leaflets opposite, oblong or long obovate, 3 - 9cm long, 1. 5 - 4cm wide, apex obtuse or emarginated, base slightly oblique

葉為二回羽狀復葉，長10 - 25厘米，葉軸先端常變為?須，羽片通常2對，頂生1對羽片變為?須；小葉2 - 4對，對生，長橢圓形或長倒卵形，長3 - 9厘米，寬1 . 5 - 4厘米，先端鈍、微凹，基部略偏斜。

Underpart lamp stand for cover disc shape, sole concave yield, flat facial ornament runs flowers 5 times, carve and collude and connect with the cloud line in the base

下部燈座為覆圓盤形，足底凹進，座面飾五辦花，底邊刻勾連雲紋。

Concave disk colter

凹面圓犁刀

Semi - circular profile milling cutters, concave ; dimensions

半圓成形凹銑刀.尺寸

The diameter of a sphere is four times the focal length of a concave mirror cut from it

凹面鏡如果是從圓球上切下來的，圓球的直徑會是凹面鏡焦距的四倍。

With the concavity and integrability of sublinear terms near zero, the symmetry results for a class of sublinear elliptic equations are given by making use of the moving - plane method

本文利用次線性項在零點附近的凹性和可積性，用移動平面法給出了一類次線性橢圓方程正解的對稱性

Leaves leathery, ovate or elliptic, 7 - 12 cm long, 3. 5 - 5 cm wide, apex short acute, base rounded or cordate, upper surface green, glossy, lateral veins 6 - 8 pairs, impressed adaxially and prominent abaxially

葉革質，卵形或橢圓形，長7 - 12厘米，寬3 . 5 - 5厘米，先端短急尖，基部圓形或心形，上面亮綠色，側脈6 - 8對，在上面凹陷，在下面突起。

These specimens of ruppia are characterized by possessing a small oval endocarp, smooth endocarp surface, distinct narrowly elliptic external depressions, distinct apical mucro, slightly curved seed shape and conspicuous globose hilum. a new species, r. yushensis sp. nov

該新種的主要特徵為內果皮卵形、表面光滑、側面具兩個顯著的窄橢圓形凹陷、頂端具一個明顯的小尖突，以及種子頂端具顯著的球形膨大的種臍。

I copied a reproduction of the silverpoint using a homemade epidiascope based on a small circular concave mirror and direct solar illumination, and when i deliberately “ bumped ” my own epidiascope, i found such a mismatch to be very conspicuous

我用小型的圓凹透鏡與陽光組成的自製幻燈機，從銀尖筆畫復制了一張畫，而當我蓄意碰撞自己的設備后，我發現位移結果是非常醒目的。

From up to down, food firstly arrives at material output bar, then lays off from taper concave slope, finally, food gets into round basin on baseplate after mutual effect through arcual fillister

食品從上而下先到達彈性導料條，再到錐形凹坡下料，最後通過弧形凹槽的相互作用，食品到達底盤上圓形食盆。

Based on the analysis of the advantage and disadvantage of both overseas and domestic closed cold forging equipment, closed cold forging equipment consisting of a nc precise forging hydropress and a set of hydraulic drive female die has been developed, hence realization of the precision die forging of key parts for car, such as bevel gears

摘要在分析了國內外現有閉式冷精鍛裝備的優缺點的基礎上，開發研製了數控精鍛液壓機和液壓傳動凹模模具裝置，構成閉式冷精鍛設備，實現了圓錐齒輪等轎車關鍵零件的精密模鍛生產。

( 6 ) in this paper. adopting fea software ansys to simulation and analysis the al ecap process. in order to spread out studying of ecap in the future. the results show : die comer angle, the radius of round angle, the friction coffience of workpiece and die, the properties of die ( elastic modulus, possion ratio ) et al, have some degree impact on the deformation of materials

（ 6 ）採用有限元（ fea ）分析軟體ansys對al的擠壓過程進行ecap模擬與分析，為后續研究工作做好鋪墊，分析結果表明：外切角、圓角半徑、試樣與凹模之間的摩擦系數、凹模本身的特性（如彈性模量、泊松比等）等等，對材料的變形量都由不同程度的影響。

( 2 ) the causation that the caustic phenomena of electromagnetic wave propagation in two - dimension concave reflectors occurs and the types of singularities in caustic fields are investigated, and the conclusion that there are two types of singularities ( fold and cusp ) in caustic fields in two - dimension concave reflectors is obtained ; by symplectic geometrical method, formulations of computing wave fields in and far away from caustic fields in two - dimension concave reflectors are deduced, and the results are plotted in pictures. ( 3 ) the cause of the caustic phenomena of electromagnetic wave propagation in three - dimension concave reflectors and the types of singularities in caustic fields is discussed, and the conclusion that there are three main types of singularities ( fold, cusp and swallowtail ) in caustic fields in three - dimension concave reflectors is obtained ; by symplectic geometrical method, the formulae of computing wave fields in and far away from caustic fields in three - dimension concave reflectors are deduced. particularly, the wave fields in ellipsoid concave reflector are computed, and the results displayed in special sections are given

論文主要包括三個方面： （ 1 ）分析了凹面反射的焦散現象，給出了不同凹面反射的焦散圖； （ 2 ）分析了二維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類，得出了二維凹面反射波動場焦散區奇性主要有折疊（ fold ）和尖點（ cusp ）兩種的結論，利用辛幾何方法構造了圓錐曲面反射波動場非焦散區和焦散區的通用計算公式，並給出了圓柱面、橢圓柱面及雙曲柱面反射的計算結果； （ 3 ）分析了三維凹面反射波動場焦散現象產生的原因及焦散區奇性的種類，得出了三維凹面反射波動場焦散區奇性主要有折疊（ fom 、尖點kusp和燕尾k ）三種的結論，提出了利用辛幾何方法計算三維凹面反射波動場非焦散區和焦散區的計算方法，並給出了三軸不等橢球體凹面反射波動場的計算結果剖面圖。

This paper referred to the massive domestic and foreign technical material, elaborated in the sheet forming value simulation theory essential technology in detail, points out when analysis sheet forming question should use the big distortion ball plasticity fem and introduce the application characteristic and the function summarizes of the sheet forming simulation software dynaform. secondly, analyzed the cover forming characteristic, simultaneously introduced the influence cover forming factor in detail : such as ramming direction, the craft addendum surface and the material pressing surface, the radius of convex - concave mold, draw bead, pressure strength, blank size and craft margin and so on. and simulates many typical automobiles cover panel with software : such lateral board, back taillight pedestal and storage cover

其次，分析了覆蓋件成形的特點和要求，同時詳細介紹了影響覆蓋件成形的因素如沖壓方向、工藝補充面和壓料面、凸凹模圓角、拉延筋、壓邊力、坯料尺寸和工藝切口等，並用數值模擬軟體對多個典型的汽車覆蓋件汽車后側圍板、后燈座以及轎車后備箱蓋的沖壓成形情況進行模擬，用模擬結果優化拉延工藝方案，比較了內覆蓋件和外覆蓋件在成形特點和要求的一些異同點，以及常見的起皺、拉裂和回彈、成形不足等缺陷的產生機理和相應對策，重點介紹工藝補充面和壓料面的設計及優化方法，因為拉延是沖壓工藝的關鍵工序，而工藝補充面和壓料面的設計是拉延工序的關鍵，對消除缺陷至關重要。

The springback angle increases with the increase of the punch round radius and clearances between the punch and the die while decreases with increase of the blank holder force, sheet thickness, friction coefficient and material hardening exponent

回彈角隨凸模圓角半徑和凸凹模間隙的增大而增大，隨壓邊力、板料厚度、摩擦系數和材料硬化指數的增大而減小。

A world leader in manufacturing of : rotogravure presses for printing of magazines, rotogravure and flexo presses for printing and converting of packaging materials, platen and rotary die cutters for sheet / web fed carton board, flexo presses for printing of newspapers

義大利賽魯迪印刷集團作為世界上最大的凹版和柔性版印刷機製造商之一和公認的凹版和柔性版印刷行業的領導者，主要產品有：出版用凹版印刷機、包裝用凹版和柔性版印刷機、平壓和圓壓模切機、報紙用柔性版印刷機等。

Convex and concave milling cutters technical specifications

凸凹半圓銑刀技術條件

Corner rounding concave milling cutters with parallel shank ; dimensions

凹形直柄倒圓銑刀.第1部分:尺寸

Convex and concave milling cutters - part 1 : the types and dimensions for concave milling cutters

凹半圓銑刀的型式和尺寸