内腔

With the integration of computer, network technology, and automation technology, a cold box coremaking production system has been developed so that a networked coremaking shop has been realized.

制造业的飞速发展对铸件质量和尺寸精度提出了越来越高的要求，因而对构成铸件内腔的砂芯的要求也更高。

While I can use 腔 of the stomach immediately very for one or two minutes to be able to stand on end how many times br is every day how many seconds it is every time, and the organ in the thoracic cavity moves to the contrary direction and it drips with gastroptosis, the kidney and can reduce it clearly likewise, and the time stands, Osamu own は is not cured.

若每天能做几次倒立，每次做几秒钟至一二分钟，就能使腹腔、胸腔内的器官向相反的方向移动，胃下垂、肾下垂等也会明显减轻，久而久之，不治自愈。

Objective: To explore the renal damage effect of flushing Sodium Chloride into pelvis unilaterally at constant intrapelvic pressure, and provide a theory basis for clinical practice for the treat of upper urinary tract diseases by endoscope.

目的：研究兔单侧输尿管逆行恒压灌注后对肾脏的影响，为临床评价内腔镜操作所致肾脏的改变提供理论依据。

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。

By micro-analysis on the aging fibers, it indicates that attack of alkali hydrates to vegetable fibers is serious and the flexibility becomes lower and the brittleness becomes increase for the calcium hydroxide crystal conglomerated in the fibers bosom.

通过对老化后纤维的微观分析发现，水泥水化后的碱性物质对天然植物纤维的侵蚀较大，Ca_2晶体在纤维内腔中的沉积使纤维的柔性降低，脆性增加，在长期干湿循环作用下，纤维水泥基材料的抗折强度下降。

It features in the stair type rotary adapter between the wind blast end and reducing wind pipe, the conic section of the horizontal profile of the inner cavity of the wind blast end, and linear design of the longitudinal profile, with wind shroud equipped at each exhaust outlet of the wind blast end.

本发明技术特征是送风末端与变径风管之间设有阶梯形可旋转联接器，此外，送风末端内腔的横截面为2次曲线，纵截面为流线型设计，并在送风末端的出风口处设有均风罩。

The pattern of the tyre of agricultural vehicles has to fit in with the inclement working situations of the vehicles,which brings some difficulty to the pattern block mold design of the tyre.

文章介绍了农用轮胎的特点和轮胎模具的生产流程，然后结合轮胎花纹块的铸造、抛光、机械加工等工艺要求，阐述了农用轮胎花纹块模具设计方法并导出计算公式，内容包括：径向断面的工艺尺寸设计、轴向与周向的展开与弯曲设计；提出采用Coons曲面构造出模具内腔壁曲面的方法。

The company has research and development centers, quality control centers, manufacturing centers, marketing centers and raw materials supplier of the five sections, has 4000 employees, the main production and operation,"St. Spring" brand intracavity inviscid sand cast iron radiators and copper and aluminum composite radiator, the radiator in the production of 30 million.

公司设有研究开发中心、质量控制中心、生产制造中心、市场营销中心和原材料供应中心五大板块，有员工4000名，主要生产经营&圣春&牌内腔无粘砂铸铁散热器和铜铝复合散热器，年生产散热器3000万片。

Bolting –Snug up the bolts finger-tight so that the circumference of the inside bore of each companion flange evenly touches the face-seals of the butterfly valve.

螺栓–调整好螺栓的手指紧固部分，使得每个配对法兰的内腔圆周能够均匀接触蝶阀的面密封。

It shows that the exhaust resistance at the wind blast end reduces obviously, driven by the 800mA/12V small scale draught fan, average exhausting speed reaching above 4m/s, fairly enough to satisfy the air conditioner's demand for new wind volume. Meanwhile, the conic section of the horizontal profile and the linear design of the longitudinal profile of the exhaust end inner cavity and wind shroud for each outlet greatly reduce the flowed out exhaust, effectively lowering the wind blowing feel of the air conditioner user by playing the function of air diffusion.

经过计算和实际测试表明，该装置的送风末端风口阻力明显减小，在800mA/12V小型风机驱动下，出口平均风速可达4m/s以上，足以满足空调对象的新风量要求；同时，横截面采用2次曲线型设计、纵截面采用流线型的送风末端内腔和出口均风罩使气流流出后风速迅速衰减，起到散流器的作用，有效降低了空调对象的吹风感。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。