| 单词 | concave |
| 释义 | concave [英 [k?n?ke?v] 美 [kɑ:n?ke?v] ] concave的意思、解释 过去式：concaved; 过去分词：concaved; 现在分词：concaving; 复数形式：concaves; concave 基本解释 concave 名词凹面，成凹形 形容词凹的 及物动词使成凹形 concave 网络解释 1. 1. 凹：此为一般待焊板无铅回焊所常用的有鞍型回焊曲线,各热量差异较小.此 L 型曲线以直线式或稍呈下凹(Concave)为宜,不可出现隆起(Convex)状态,以免板 面过热造成厚板之表层起泡.且此升温线的 2/3 长度处不宜超过 150℃,其余参数同上 29. 2. 凹的：微观经济理论认为,当企业的生产投入集是闭的(closed),单调的(monotonic)且满足自由处置(free disposal)等条件时,如果生产函数关于产量是凹的(concave),那么其对应的成本函数关于产量就是凸的(convex ). 3. 凹形：convex 凸面 向外弯曲.凸面镜是一面镜子,它的反射面是由球或抛物体的外表面 形成的.凸面透镜至少有一面由球的外表面形成.双凸透镜有两个凸面, 故其中心最厚.平凸透镜有一平面和一凸面.凸凹透镜(亦称弯月形透镜) 有一凸面和一凹形(concave)面. concave 双语例句 1. To deal with the use of both sides of the face, the left side are concave thumb position, the use of anti-network design, the right side to support the design and ring for intense and long-lasting comfort to provide the best games and the most control of. 两侧面采用磨沙处理，左侧面有拇指内凹位置，采用网点防滑设计，右侧面的设计亦能够承托无名指和尾指，为激烈而持久的游戏提供最佳的舒适性和最强的掌控性。 2. 2. Aluminum foil business card printing and membership card production is done by a business card printing and membership card making roll of concave surface business card printing and membership card making text pattern, start by printing plate roller by making printing graphics and text, picture and text part roller copper coating on the surface, marked as monlchamus hole or holes, while others were non-graphics and text, and the outer surface of the bronze Bowl itself. 铝箔制卡和会员卡制作是堵住制卡和会员卡制作版辊的下瘪表背来制卡和会员卡制作笔墨图案，首先不兵印版辊筒堵住边加工制成印邦畿不白，图不白局部在辊筒铜层表背上被腐化成墨孔或瘪坑，否图不白局部则是辊筒边层铜质表背本身。 3. concave的近义词 3. Aberration of the concave mirror is reduced by a meniscus lens. 用半月板镜头减少凹透镜的过失。 4. The third lens group includes a 3rd-group 1st meniscus lens having a concave surface on the image plane, a 3rd-group 1st compound lens formed by joining a 3rd-group 1st negative lens having opposite concave surfaces and a 3rd-group 1st positive lens having opposite convex surfaces, and a 3rd-group 2nd meniscus lens having a convex surface on the image plane side arranged in that order from the screen side toward the image plane side. 第三透镜组包括一个在像平面侧具有凹表面的第3组第一凹凸透镜，一个由具有相对凹面的第3组第一负透镜和一个具有相对凸面的第3组第一正透镜结合的第3组第一组合透镜，和一个在像平面侧具有凸表面的第3组第二凹凸透镜，它们以从屏幕侧到像平面侧的顺序布置。 5. Lens, plano-convex lens, double-convex lens, plano-concave lens, double-concave lens, plus/minus Meniscus Lens. 球面镜：平凸透镜、双凸透镜、平凹透镜、双凹透镜、正/负弯月透镜、超半球透镜、金属球面镜、积分器及其他球面胶合镜等。 6. 6. In us concave and convex meeting is exhibited when the net has not built, had begun to build QQ oneself group prepare for promotion, because our website is to do what can exhibit, cause client is to join postpone business, extend meeting service business, exhibit a stage to build business, exhibit a business that rent, group to exhibit the relevant group such as business, so I am exhibited through meeting, the exhibition is revealed wait for relevant keyword, in QQ group the user searchs li of cause client that will search for his, the QQ that invites them to join me group, specific aim is very strong, particular way, everybody can see my another article website was not become, QQ group go ahead of the rest. 在我们凹凸会展网还没建成的时候，就已经开始自建QQ群为推广做预备，因为我们网站是做会展的，目标客户是参展商、展会服务商、展台搭建商、展台租赁商、组展商等相关群体，所以我通过会展、展览展示等相关要害词，在QQ群用户查找里来搜寻自己的目标客户，并邀请他们加入我的QQ群，针对性很强，具体的做法，大家可以看看我的另一篇文章网站未成，QQ群先行。 7. Concave shape, incurvation, incurvature a。凹凸的，一面凹一面凸 8. On the basis of B-Rep of CAD data and ACIS library, a technology of surface filling based on loop feature handling and outlines smoothing is presented in the paper, filling for the surface with complex concave edges is also studied in the paper. 以CAD数据的边界表示法和ACIS几何开发库为基础，提出了基于环特征处理和外边界光顺的曲面填充技术，对含有复杂凹缘的汽车覆盖件曲面填充进行了研究。 9. If for all in, then is concave down on. 若在内，则在上的图形是凸的。 10. 10. Of if is concave up on one side of and concave down on the other side. 点，如果在点的一侧是凹的，而在的另一侧是凸的。 11. We say that is concave down on. 那么称在上的图形是凸的。 12. The palm of one's hand is slightly concave. 人的手掌是微凹的。 13. My account is concave, and so deep I born. 我的就是凹进去的，并且很深我天生就这样。 14. If for all in, then is concave up on 若在内，则在上的图形是凹的 15. In 1985, Guo Dajun proved that an increasing and α concave operator is of cone contraction, however, is an increasing and α convex operator of cone expansion? 5年 ，郭大钧证明了增的α-凹算子是锥压缩的，那么增的α-凸算子是否是锥拉伸的呢？ 16. Through analysis of the surface characteristic and tool feature, it is realized that 3-dimension surface undercut is usually caused by the following reasons:(1) irrational surface types are adopted to generate the surface, which is biased to the real surface.(2) the cutter nose radius is larger than the machined surface radius in the inner recess.(3) The treatment of the concave corner of two surfaces in CNC program is improper. 三维曲面在模具设计中被广泛采用，通过对曲面特性及刀具特性的认识，将三维曲面加工中的过切归纳为如下四种原因：(1)选用了不合理的曲面类型而使生成曲面偏离了实际所需曲面；(2)生成曲面内凹圆角处的曲率半径小于数控加工中所采用的刀具半径；(3)在两曲面的凹型交线处，对曲面的加工范围处理不当；(4)变曲率加工选用了不恰当的插补步长。 17. Firstly, it regards losing only as factor of measure so that it can reflect the actual mentality for risk of investors and it accords principles in science; Secondly, in view of Utility Function, it only requires investors of risk averse. In other words, it requires that Utility Function is not quadratic as needed in variance but concave. 首先，它仅将损失作为风险的计量因子，反映了投资者对风险的真实心理感受，符合行为科学的原理；其次，从效用函数的角度看，它仅要求投资者是风险厌恶型，即效用函数是凹型的，而不像方差那样要求二次型的效用函数。 18. 18. Have known concave-convex soil of landed estate and the new model compound adsorption driers taking the person as raw material such as Anhui Ming Guang, Jiangsu Xuyi, local concave-convex structure and water absorption function, think that concave-convex soil has but is H2, N completely compared with zeolite molecular sieve, 2, O 2, air waits for the inactive gas adsorption drier. 了解了安徽明光、江苏盱眙等地产凹凸土及以其为原料的新型复合吸附干燥剂，凹凸土的结构和吸水性能，认为与沸石分子筛相比，凹凸土完全有可作为H2、N 2、O 2、空气等惰性气体的吸附干燥剂。 19. 19. We could put the stone surface under the sunlight lamp or sun, granite and marble, stone products observe its reflecting surface, then could see clearly these kind of concave and strip, if it is because of the mineral, we could ignore it, but if it is because of the bad polish, then had better to avoid to purchase this kind of stone. 我们把加工好的石材表面对着太阳光或日光灯，观察反光面就可以清楚发现如图所示的各种凹坑和条痕，对于那些无规则的细小凹坑可能是由石材组成矿物的一些自身缺陷造成的，可以不去考虑，而如果在石材的表面发现一些有规律的条痕，则是由于加工质量较差造成的，选购时应尽量避免这样的石材。 20. We could put the stone surface under the sunlight lamp or sun, observe its reflecting surface, then could see clearly these kind of concave and strip, if it is because of the mineral, we could ignore it, but if it is because of the bad polish, then had better to avoid to purchase this kind of stone. 我们把加工好的石材表面对着太阳光或日光灯，观察反光面就可以清楚发现如图所示的各种凹坑和条痕，对于那些无规则的细小凹坑可能是由石材组成矿物的一些自身缺陷造成的，可以不去考虑，而如果在石材的表面发现一些有规律的条痕，则是由于加工质量较差造成的，选购时应尽量避免这样的石材。 concave 词典解释 1. 凹的;凹面的 A surface that is concave curves inwards in the middle. e.g. ...a concave stomach. 凹陷的腹部 e.g. ...the concave bottom of an empty hair spray container. 空喷发胶罐凹进去的罐底 concave 单语例句concave的近义词 1. The Stone Boat is a big concave stone which resembles a boat. 2. The pit hotel is a marvel at home and abroad and the only one of its kind with concave pits. 3. Pleat the jiaozi on one side only, so it gets its traditional concave ingot shape. 4. Using the sun's rays harnessed in a concave mirror is the traditional way to light the torch. 5. Another example of Yang's " thinking of the user " experience is the vertical concave and convex patterns on the tea set. 6. A distinctive grid represents radiating energy, while the background is concave to suggest an amphitheater. concave 英英释义 adj 1. curving inward |
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