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According to the difficulties of designing and molding aerofoil blades, a application program which can be used to exactly draw profile curve of blade section is developed with VBA, which is based on the analysis of calculation method for designing and molding aerofoil blades and adopts OLE provided by CAD software SolidWorks.

在分析翼型叶片造型计算方法的基础上，针对翼型叶片造型的难点，利用三维 CAD 软件 SolidWorks 提供的 OLE 应用编程接口，使用 VBA 开发了准确绘制叶片截面轮廓曲线的应用程序，并给出了叶轮三维建模的方法和步骤。

A rotor structure for a rotating wing aircraft having substantially rigid rotor head means and rotor blades or wing means arranged in at least one pair, comprising blade angle bearing means (10, 12, 14, 16) for each rotor blade means, tension bar means (6,8) operatively interconnecting the rotor blade means of a pair which blade means are arranged diametrically opposite each other, said tension bar means having a high bending resistance, whereby transmission of bending moments from the rotor blades to the rotor head means is substantially prevented, each of said blade angle bearing means comprising a structure angularly movable in the wing flap direction and in the wing lead-lag direction, at least one of said blade angle bearing means of a pair comprising means permitting an axial motion of the respective tension bar means supported in said blade angle bearing means, and wherein said blade angle bearing means (10, 12, 14, 16) operatively support said tension bar means (6, 8) on said rotor head means (4) for pitch angle rotation of said tension bar means relative to said rotor head means (4), said rotor structure further comprising means (24) securing said rotor blade means (18) to said tension bar means (6, 8) in a manner rigid against rotation of the blade means about the longitudinal blade axis whereby the securing means prevent flapping, drag and lagging movements of the tension bar means, said tension bar means being constructed as torsion bars which are elastic relative to torsion about said longitudinal blade axis.

1转子结构为旋转翼飞机，有大幅刚性转子头部的手段和转子叶片或机翼的手段安排中至少有一对，组成的叶片角度轴承手段（ 10 ， 12 ， 14 ， 16 ）为每个转子叶片的手段，拉杆手段（ 6，8 ）手术互连转子叶片的手段，其中一对刀片的手段都是安排截然相反的对方说，拉杆手段，有一个高弯曲阻力，即传输弯矩从转子叶片向转子头的意思是，大幅防患于未然，每个叶片角度说，轴承的手段组成的一个结构angularly动产在机翼上皮瓣的方向和在机翼导致滞后的方向，至少有一个叶片角度说，轴承是指一对组成的手段，允许轴向的议案，分别紧张酒吧手段，支持在叶片角度说，轴承的手段，其中，叶片角度说，轴承的手段（ 10 ， 12 ， 14 ， 16 ）手术的支持表示拉杆的手段（ 6 ， 8 ）就表示，转子头部的手段（ 4 ）为俯仰角轮换说拉杆手段相对说，转子头部的手段（ 4 ）表示，转子结构进一步组成的手段，（ 24 ）说，确保转子叶片的手段（ 18 ）表示，拉杆手段（ 6 ， 8 ）在一个僵化的方式对旋转的叶片即是说，约纵向叶片轴，即确保手段防止扑，拖曳和落后变动的紧张局势，酒吧的手段，说拉杆手段，正在建造的，作为扭杆这是弹性相对扭转约说，纵向叶片轴。

A colleague of mine is married to a thrifty Frenchman who waits at least two months before changing razor blades. He has gone as long as six months. When he does change blades, it feels 'like a warm knife through butter,' says Jean-Philippe Masson, 36 years old.

我 的一位同事嫁给了一个节俭的法国人，他至少等两个月才换一次剃须刀刀片，最长六个月才换一次刀片。36 岁的让-菲利普马松(Jean-Philippe Masson)说，当他换完刀片后，刮胡子的感觉"就像热刀子切开黄油一般顺畅"如果你每周都。

There are shovel blades equipped bottom of the cinquefoil shelf. When shovel blades rotate with rollers, they throw up the materials and send them into the space between rollers and ring and then form a material bed. The material bed produces centripetal force as a result of rotating of roller. The material is crushed by the centripetal force.

磨辊吊架下装有铲刀系统，其位置处于磨辊下端，铲刀与磨辊同转过程中把物料抛起喂入磨辊与磨环之间，形成垫料层，该料层受磨辊旋转产生向外的离心力碾压，达到制粉目的。

In order to study the effect of Coriolis acceleration on the natural frequency and dynamic stress of high spinning steam turbine blades, a computational model of Coriolis force and dynamic stress induced by Coriolis acceleration in blades is presented using analytic method.

该模型克服了以往在叶片动态特性分析时难以考虑科氏力影响的问题，导出了科氏动应力和非稳态气流动应力比值的计算公式以及科氏力和离心力比值的计算公式，并进行了实例分析。

Martensia was characterized by either single or multiple network-banded blades, procarps consisting of a four-celled carpogonial branch flanked on one side by a single lateral sterile group and on the other side by a group of cover cells, and cystocarp scattered over fertile blades.

此属的特点为藻体膜叶状且膜叶具有单或多层的网状结构，其雌性殖果孢枝特化具有侧边单一的不孕枝而另一边有一群覆盖细胞，果孢子囊散生在藻体各处。

A drilling apparatus (10) for earth boring operations is of the type having cutter blades (17, 18) mounted on a support body (12, 72, 82) at the lower end of a drill string and includes a novel arrangement of fluid bore sections (15, 23, 23', 63, 64, 65', 92) for delivering fluid under pressure into fluid discharge passages (50, 52) in each of the blades and a bifurcated pivotal mounting portion (16, 74, 91) on the body which enables the bore sections to supply fluid to the cutter blades through a ball joint (22) on the pivotal axis.

一种用于地面钻孔操作的钻井设备(10)，在钻柱的下端具有安装在支撑体(12，72，82)上的切割刀片(17，18)，并包括流体孔部分(15，23，23′，63，64，65，65′，92)和该支撑体上的分叉的枢转安装部分(16，74，91)的新颖结构，该流体孔部分用于在压力作用下将流体供给到每个刀片的流体排放通道中，该安装部分使的该孔部分通过枢转轴线上的球接头(22)能够将流体供给供给到该切割刀片。

H higher than those for shanyou 63 respectively, the calcium contents in extracts, the Mg(superscript 2+)-ATPase activities on the chloroplast membranes, the cyclic photophosphorylation activities of the flag leaf sheathes and blades for Liangyoupeijiu were also higher than those for Shanyou 63; the means of noncyclic photophosphorylation activities of the flag leaf sheathes and blades for Liangyoupeijiu were 0.25 and 0.31 μmol/ higher than those for Shanyou 63, respectively; the photochemical avtivities of the flag leaf sheathes and blades for Liangyoupeijiu were significantly higher than those of its parents at most stages, showing heterosis over mid-parent or heterobeltiosis.

h，且大多数时期达显著或极显著水平；两优培九剑叶叶鞘及其叶片浸出液钙含量均显著或极显著高于汕优63；两优培九剑叶叶鞘及其叶片叶绿体膜上Mg(上标 2+)-ATPase活性的均值均高于汕优63，大多数时期达显著或极显著水平；两优培九剑叶叶鞘及其叶片循环光合磷酸化活性的均值也均高于汕优63，近一半时期达显著或极显著水平；非循环光合磷酸化活性的均值分别比汕优63高0.25和0.31μmol/mg？

The calculation results shows that ,(1) when the rotor rotates at the working speed, a local regurgitant whirlpool that is rightabout to the rotor"s rotating direction appears in the classifying region, which makes the separated granules come back to the outside of the classification district and influences the classification efficiency of the turbine classifier;(2) in the condition of a low rotating speed of turbo rotor, ultrafine particles can follow the gas phase by and large, but when the rotating speed increases, a phenomenon of velocity slippage between two phases appears evidently;(3) A operating parameter, air flow rate is so important that can directly influence the stability of flow field in classifying chamber, the bigger the air flowrate is , the steadier the flow field is;(4) Compared with straight blades, the new shape of blades with backward crooked elbow are helpful to improve the stability of flow field and form whole stream easily, also beneficial to advance the classification accuracy and classification efficiency;(5) The motion trace of particles are very complicated when the turbo rotor rotates at a high speed, the constant bounce of the particles appear between the blades and the coarse particles are even bounce back from the inlet, only the finer can pass through the classification area from the oulet;(6) Along with the increase of the rotor"s rotating speed, radiah axial and tangential velocity all begain to fluctuate repetitively like sine-wave, the smaller the particles are, the more violently they fluctuates.

数值模拟结果表明，(1)在涡轮达到工作转速时，在分级区域形成了一个与涡轮旋转方向相反的局部回流涡，它使得分离出来的细粒重又被带回分级轮外边缘，从而严重影响分级机的分级效率；(2)粉尘粒子在涡轮低速运动情况下，基本上能跟随气体运动，但随着转速加大，两相之间出现了明显的速度滑移现象；(3)分级机工作时的风量也是一个比较重要的操作参数，它可以直接影响到分级机内腔流场的稳定性，风量越大，流场越稳定；(4)同直叶片形状相比较，带后弯导板的叶片，有利于改善流场的稳定性，流场容易形成整体流，对提高分级效率和分级精度都非常有利；(5)粒子轨迹线在涡轮转速较高时十分复杂，有的出现了反复的弹跳现象，大颗粒不能通过分级区域而从进口返流了，只有细小的颗粒才从出口处流出；(6)涡轮转速加大时，粒子的径向、轴向和切向速率出现了明显的类似于正弦波的脉动现象，颗粒越小，脉动程度越为剧烈。

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主要刀片产品有切纸刀片，分纸刀，分纸单刀及砂轮，开槽机刀，单板切纸刀片，三面切纸刀片，旋转切纸刀，横切刀，圆筒卫生纸切刀，分切上下刀，皮革上下刀，皮革裁刀，切光刀，切刻圆刀片，切管刀，碗刀片，导纸片，模切刀，羊肉切片刀，蔬菜切片刀，火腿薄切刀，圆盘滚剪刀，纵剪分条刀，切条刀片，轴承刀，光刀圈，多刃刀圈，蝶形刀，石棉瓦花刀，铜箔裁切刀，铝箔切刀，线路板裁切刀，PP裁切刀，切脚机刀片，剪板机刀片，轧钢刀片，钢筋剪断刀，废钢破碎刀，塑料粉碎刀，切粒刀，切粒滚刀，合金切粒滚刀，橡胶刀片，底封刀，制袋机刀，连卷袋刀片，胶合板刀片，木工刨刀，切片机刀，冲剪机刀片，飞剪刀片，刮刀，涂布刮刀，薄刀系列，钨钢薄刀片，钨钢圆刀片，超硬合金裁纸刀，三孔刀片，化纤刀片，切布刀，齿形刀，样布裁切刀等，非标刀片可定制。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。