有角的

To get the steady interface, the ratio of coextrusion flow length to height is at least l-1.5._The role of smooth flow zone is important to reduce the pressure-fall. The higher surface quality of the fluid path can make the velocity field more uniform and the interfacial offset less. However, the layer interface position was almost unaffected by the convergence angle, so for the convenience of die manufacture and extruder\'s collocation, it is fit to make the contact angle as 90°with smooth corner.

在模具结构参数中，共挤出流道的长度和模具壁面光滑程度对界面有重要的影响，根据计算结果得到了方形流道共挤出段长度与高度比的取值范围；而模具入口收敛角对界面的影响不大，在实际生产中为了模具制造和共挤出机布置的方便，可采用圆滑过渡的90°入口角。

Interesting works include three parts,(1) deriving an elastic strain energy equation to discuss constitutive relations of various elastic symmetry systems, and to check out some errors in previous papers.(2) deriving effective elastic constants of EDA-PTL medium;(3) deriving and numerically studying the elastic wave rays angle dispersion phenomenon.

除了引用前人给出的公式外，本论文有特色的工作是：推导了一个应变能公式，给出了各种对称体系下的弹性本构形式，对前人给出的结果作了验证，指出存在的个别错误；对EDA构成的薄层介质各向异性弹性常数作了推导，给出了解析表达；对几种类型的各向异性体系的角散式进行了推导并作了数值计算。

And there is an approximate linear relationship between the momentum of the automatic mechanism and the length of the gas tube.

如β=〓与β=〓相比较（β角单位为弧度，其定义详见正文），前者与后者对应的气室最大压力之比可达65%，而对应的自动机动能之比可达60%；导气管内径对气室内气体压力冲量和自动机动能的影响存在极值点，且该极值点随导气孔的增大而有规律的增大；导气管长度对气室最大压力、压力冲量和自动机动能的影响呈单调递减规律，且自动机动量与管道长度之间近似符合一直线关系。

I used to be a teacher for ten years.it was 1926 I finished my study in American and became a teacher in national department of almamater Yangjing university.most of directors and teachers are my teacher.also other departments has my teacher.anyway,all the teachers in the school are my predecessors.so when it came to professoriate,I always chose a corner or an edge ,stayed very terrified.people all joked me as faculty baby.i was less than 26 that term.

我只当过十年的教师。那是一九二六年我从美国留学回来，在母校燕京大学国文系当了一名教师。那时系里的主任和教师大半是我的老师。校内其他科、系里也有我的老师。总之，全校的教师都是我的师辈！因此在开教授会的时候，我总是挑个极边极角的座位，惶恐地缩在一旁。大家都笑着称我为 Faculty Baby。那一学期我还不满二十六岁。

By making use of contraction mapping principle and similar matrices and graphical method ,this paper discusses some methods of asking its limit in accordance with recurrent sequence of number.3. The criteria whether Ⅰ,Ⅱ,Ⅲ types of crank-rocker mechanisms exist are given and the graphical method of synthesizing crank-rocker mechanisms with quick return characteristics are proposed.

针对目前具有急回特性的曲柄摇杆机构综合中存在的不足，对这类机构的图解法综合进行了深入的探讨，得到了行程速比系数和摇杆摆角取不同值时，Ⅰ型、Ⅱ型、Ⅲ型曲柄摇杆机构是否有解的判据，并给出用图解法综合具有急回特性的曲柄摇杆机构的方法。

The dragon is said to have the face of the horse, the horns of the deer, the ears of the ox, the body of the snake, the claws of the eagle and squama of the fish.

龙是有马的脸，鹿的角，牛的耳朵，蛇的身体，爪鹰的爪和鳞鱼的鳞。

In this paper, we propose a new approach to recognize occluded objects. The information of the magnitude of the local extreme of the open angles in the contour of a model at a scale, the information of the distance and relative location between the two adjacent dominant points are suitably integrated as a set of features for describing a model, the features are invariant under rotation, uniform scaling, and translation of the curve.

该文提出了一种新的识别有遮挡目标的方法，即将目标模型和含有目标的遮挡图象的轮廓在某一尺度上张角的极值、极值点之间距离、相对位置等信息集成在一起，作为描述目标模型的一组特征，且这组特征在平移、旋转和均匀尺度变换下保持不变。

Right now one will see more dogs that are straight in front and over angulated in rear most can not move true.

那么你会看到有很多的狗是前驱看上去太直，而且后驱的角度过大（翻译者认为：前驱角度过大，镰刀状的后驱，就是大家都说的深后驱，这样的狗确实在现实生活中很多），这样的狗大部分动态都是错误的。

Through block wall experimental study we can find out that cracks would appear late and the load of crack-resisting and limit-resisting are increased obviously by the constructional measures in the wall. It is very effective method that the splayed cracks are controlled by sill ring beam, the horizontal bending cracks are controlled by structural column on the side of the wall and the horizontal cracks on the top of the wall are controlled by the whole ring beam. It is the most effective method that wall cracks are controlled by structural column, crout column and sill ring beam.

通过试验主要得到在墙体中采取构造措施后，墙体裂缝推迟出现，开裂荷载和极限荷载都有很大程度的提高，同时发现窗台圈梁在控制窗角的八字缝、墙体两侧构造柱对于防止水平弯曲缝以及全截面的圈梁在防止墙体和圈梁交界处的裂缝的出现能起到很好的效果，通过试验确定在砌块墙体中采取&构造柱+芯柱+窗台圈梁&的构造措施来控制裂缝是最为经济合理有效的。

Result shows that the baffle of burner has very little influence on the total resistance characteristic; both the speed of rich side and lean side are affected by the angle of burner as a whole, furthermore, the lean side is influenced more greatly; the separation performance could be enhanced with the increase of burner's angle and the best separation effect could be acquired when the three baffles are dissymmetrically arranged.

结果表明，燃烧器挡板角度的调整对燃烧器的总体阻力特性影响很小；燃烧器挡板偏转对于燃烧器整体以及浓淡两侧的气流速度都有一定的影响，且对淡侧影响较大；燃烧器的浓淡分离效果随挡板偏角的增加而显著增加，且三挡板非对称布置的浓淡分离效果最好。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。