实践证明：设计出的剃齿刀寿命长，加工质量好，对中凹现象有明显改善。
Facts have proved that the designed shaving cutter is long-lived, good in machining quality, and effective on correcting centre-concave.
在轴测投影中凹回转曲面的外形线可能存在尖点，这就使凹回转曲面的外形线变得复杂。
Sometimes the outline of a concave revoluted curved surface in axonometric projection would be complicated when there are some singular points on the outline.
然而用标准渐开线齿形剃齿刀剃齿后，在工件齿形节点附近会出现不同程度的“中凹”现象。
However, after shaved by shaving cutter with true involute profiles, there are the "mid-concave" phenomena on the pitch points of shaved gear tooth profiles inevitably.
推导了进入双点啮合区的法面啮合角公式，采取了独特的剃齿刀修形方式，从设计和修形上下功夫杜绝剃齿中凹的产生。
And the normal engagement angle of approaching double-point tooth area is deduced. The special dressing method of shaving cutter has been adopted.
系统给出了四种防止剃齿中凹的方法，用户可根据不同的生产条件进行选择，对每种方法的应用，系统软件都给予了指导。
Users can select from these methods according to their production condition. There is instruction for applying each method in the expert system.
弯月面容器中之静止液体的弯曲上表面，如果液体浸润了容器壁，那么弯曲面呈凹状。
The curved upper surface of a nonturbulent liquid in a container that is concave if the liquid wets the container walls.
弯月面容器中之静止液体的弯曲上表面，如果液体浸润了容器壁，那么弯曲面呈凹状；如果没有，就呈凸状。
The curved upper surface of a nonturbulent liquid in a container that is concave if the liquid wets the container walls and convex if it does not.
它有一个有趣的凹唯一去与高家庭中的其他推杆脚趾的设计。
It has an interesting concave sole to go with the high-toe design of the other putters in the family.
优化了模具结构，同时也介绍了在冲压过程中凸、凹模易开裂采取的措施和方法。
Also introduced the measure of prevent the convex and concave die cracking in course of pressing.
反曲线饰纵断面部分为凹线，部分为凸形的檐口的线脚，尤用在古典建筑中。
A molding for a cornice, having a partly concave and partly convex curve in profile, used especially in classical architecture.
曲面交线、曲面内凹区域及曲面中浅平面的加工是曲面加工的难点。
Surface intersections, concaves and shallow planes of the curved surface are difficult to machine.
证明了递减反向失效率(DRHR)性质关于卷积运算封闭，同时证明了该性质在累积发生率是凹的非齐次泊松冲击模型中也封闭。
It is also shown that the DRHR property can be preserved under non-homogeneous Poisson shock model with increasing concave cumulative rate of occurrence.
冲裁侧刃是端子模具中的重要工序，其冲裁形状和凸、凹模结构对端子生产质量影响很大。
Punching side blade is an important procedure of terminals die, its punching shape, concave die and convex die structure greatly impact the terminals on manufacture quality.
结晶器铜管在引仲加工过程中，由于凹模中心线与机床运动方向轨迹线不同，造成加工干涉和产品缺陷。
In the course of drawing process, the process interference and defect take place because of the difference between the centerline of concave die and the trace of moving direction.
研究与凸函数对应的凹函数及其性质，并指出了凹函数在最优化中的应用。
In this paper, concave function and its properties are discussed. And concave function's application in optimization are shown as well.
曲面交线、曲面内凹区域及曲面中浅平面的加工是曲面加工中的难点。
The line of intersection, inward concave and shallow area of curved surface are the difficult points in curved surface machining.
实验比较了SESAM器件在平凹稳定腔和平凸非稳腔激光器中实现被动锁模的差异，并给出理论解释。
The differences of the passive mode-locking by the SESAM in the plane-concave stable resonator and the plane-convex unstable resonator lasers were experimentally compared and reasonably explained.
一凸形突起物（26）延伸自下板，并接合一关节表面，该关节表面由在上板中形成的一凹入凹处（28）所限定。
A convex-shaped projection (26) extends from the lower plate and engages an articular surface defined by a concave recess (28) formed in the upper plate.
凹模在使用过程中，由于交变载荷的作用，使碳化物的棱角处应力集中出现裂纹，最终导致凹模开裂。
The crack appears at the edge angle due to stress concentration caused by alternating load, which finally leads to the fissuring of die plate.
实例测试表明，该侧凹特征识别方法可以有效地识别注塑产品中的侧凹特征，提高侧凹特征的识别效率。
The case study shows that the proposed method is available in recognizing the undercut features and improves the efficiency in undercut feature recognition.
约翰在事故中把车撞凹了。
因此，在整个模具设计过程中，侧凹特征的识别必须在其他一切设计活动之前完成。
So, all the undercut features in a mold should be recognized first before the other design activities can be carried out.
中颅凹底巨大海绵状血管瘤的诊断和治疗。
Diagnosis and Treatment for the Giant Cavernous Hemangiomas in the Middle Fossa.
以聚氨酯橡胶代替通常钢模中的凹模或凸模是比较有效的方法之一。
It's one of best methods to use polyurethane rubber rather than usual cavity or core in steel die.
贾平凹作品中的神秘色彩和幽默艺术，增强了作品的可读性、象征性，使作品的主题思想更加博大精深。
The mysterious color and humorous art in Jia Pingwas works enhances the readability symbolic of his works and makes it more significant.
目的探讨不同的骨骼形态中关节凹的位置情况。
Objective To analysis the position of glenoid fossa in subjects with different skeletal features.
在光记录技术中，由记录激光束在光盘表面上烧蚀的一个微小凹陷区。记录信息包含在凹区和凸区中。
In optical recording, a microscopic depression made on the disk surface by the recording laser beam. Recorded information is contained in the pits and the Spaces between pits-lands.
在光记录技术中，由记录激光束在光盘表面上烧蚀的一个微小凹陷区。记录信息包含在凹区和凸区中。
In optical recording, a microscopic depression made on the disk surface by the recording laser beam. Recorded information is contained in the pits and the Spaces between pits-lands.
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