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Both spring-return and double-acting configurations are available with either pneumatic or hydraulic cylinders.

这两种弹簧返回和双代理配置，可与任何气动或液压缸。

DeZurik Cylinder Actuators are available with double-acting pneumatic or hydraulic cylinders for on-off positioning service.

美国DeZurik公司可提供双动气动执行器或用于启闭定位应用的液动执行器。

Perhaps Drago might have been considered the underdog here, but no one told him, because he came out firing on all cylinders.

也许德拉戈有可能被视为underdog在这里，但没有人告诉他，因为他出来射击对所有气瓶。

Fig. 2 Some cylinders are equipped with two valves,one with and one without an eductor tube.

图2 一些钢瓶配备了两个阀门，一个有排放管，一个没有。

Cylinders with a full-length eductor tube, or what is sometimes called a full-length dip tube, have a tube that runs from the inlet of the cylinder valve to the bottom of the cylinder .

带有全长排放管，或者有时称为全长汲取管的钢瓶有一个从钢瓶入口一直伸到钢底部的管子。

Some cylinders are equipped with two valves: one having a full-length eductor tube for liquid withdrawal and the other a valve without an eductor tube for gas withdrawal or inert gas padding see Fig.

一些钢瓶配备了两个阀门：一个有全长排放管，用于液体提取；另一个没有排放管，用于气体提取或惰性气体填充见图2和液相提取部分

Some cylinders are equipped with two valves: one having a full-length eductor tube for liquid withdrawal and the other a valve without an eductor tube for gas withdrawal or inert gas pad ding see Fig.

一些钢瓶配备了两个阀门：一个有全长排放管，用于液体提取；另一个没有排放管，用于气体提取或惰性气体填充见图2和液相提取部分

And by using IM, the RCS of a dielectric plate and array antennas of dielectric cylinders guiding electromagmetic field with finite length are calculated. IM method gets rid of the inversion of a large matrix and its solution can be fast convergent, so it is simple and especially fit for solving the problems with which the high-frequencies and the low-frequencies deal difficultly.

本文所作主要工作及贡献如下：（1）在考虑馈源匹配良好的状况下，用各种高频近似法对卡塞格伦天线、二维与三维反射面天线的电磁散射与RCS进行了全面地分析计算，并对旋转反射器表面形状进行了低RCS外形优化设计。

Thus LES is proved to be suitable to simulate the flow and temperature fields of large scale vortices with complex geometric boundaries. LES cooperated with the second order full extension ETG finite element method is applied to simulate the forced convection heat transfer around two square cylinders arranged side by side. While the boundary conditions are symmetrical, the time history and power spectrums of drag coefficient, lift coefficient, averaged Nusselt number at the wall, and the streamwise velocity and temperature on the symmetrical points are calculated. The results show that the power spectrums are all almost symmetrical.

应用大涡模拟与二阶全展开ETG有限元离散格式相结合的方法对间距比为1.5的条件下横掠并列双方柱强制对流换热问题进行了数值模拟，通过边界条件对称时，对并列双方柱对称点上的速度和温度以及方柱的阻力系数、升力系数和壁面平均Nu数进行的时域分析和频域分析，得到了在对称边界条件下并列双方柱对称点上的速度和温度以及方柱的阻力系数、升力系数和壁面平均Nu数的功率谱均基本对称的结论。

It's not firing on all cylinders.

它的缺点就很明显。

No clear conclusions can be made about the predictie alidity of specific measures, they found, except for criteria for the underuse of drugs for cardioascular disease.

除了心血管病不合理用药标准外，对于特定评价方法的预测效度没有明确的结论。

The third and last is that almost all of them, being infinite in number, have been impostures, and by idle and crafty brains merely contrived and feigned after the event past.

第三、即最后一点是：几乎所有这些不胜枚举的预言都是欺人之谈，都是在事件过后由无聊而狡猾的脑筋推测与凭空捏造的。