在后的

The flowfield and performance of a centrifugal compressor was predicted and analysed, which was composed of a Krain's impeller and two types of vaneless diffuser specially: one was constant area vaneless diffuser and the other was the straight-wall. The results show that the efficiency of the straight-wall vaneless diffuser is obviously lower than that of the constant area, and a separate flow occurs nearby the exit of the centrifugal impeller with the straight-wall diffuser. However, the type of vaneless diffuser has little influence on the aerodynamics performance of the centrifugal impeller. Finally, it is suggested that the constant-area vaneless diffuser should be selected as the downstream extended area of the centrifugal impeller during the prediction for the centrifugal impeller.

对Krain叶轮后带等面积与直壁两种形式的无叶扩压器离心压缩机内部流场进行了计算与分析，结果表明：直壁型无叶扩压器离心压缩机的效率低于等面积无叶扩压器离心压缩机的效率；直壁型无叶扩压器使得叶轮出口的流动出现分离；扩压器的形式对离心叶轮的整体气动性能影响并不大；在进行离心叶轮数值研究时，叶轮后的延伸区最好采用等面积无叶扩压器，以尽量减小无叶扩压器所引起的计算误差。

But even after the announcement of stepping down, Ma Lik still decided to step in to it .

但是， 即使在后宣布下台，马力仍决定在它的步骤。

Nearly 50 minutes later, with a smile on my face, I dragged my weary legs out of the water, and five minutes and one battle with a wet suit later (next time I'll also Pam my skin), I was on my bike cruising up Noyac Road.

近50分钟后的我脸上的笑容，，我拖出水面，我疲惫的双腿，和5分之一，潜水衣后（下一次我将我的皮肤也帕姆战），我在我的自行车行驶了 Noyac 道。

The experiments indicate that using the dungs and straws to produce hydrogen are feasible.

实验结果表明，在厌氧条件下，采用批量发酵，控制发酵温度为25℃左右，以农作物秸秆、畜禽粪便作为原料，利用沼气发酵后的厌氧活性污泥作为天然产氢菌种来源，以乳酸调控发酵料液pH值在4.5～5.5之间，可以产生氢气。

After the rest of the components are built up layer by layer, the mesh is excavated from the strata, and once it is exposed, a gas plasma etches the silicon substrate under it, creating a cavity that allows the now released structure to vibrate freely.

在其他元件一层层制造完成之后，便将线路从该层挖出来，镂空后，再以气体电浆在底下的矽基板上蚀刻出空洞，让元件可以自由地振动。

The first use of Citrine by the Romans was in intaglios (a gem carved in negative relief) and cabochons in the first centuries after the birth of Christ.

在耶稣诞生后的第一个世纪，古罗马人首先在阴雕宝石中和圆形宝石中使用了柠檬黄。

In some cases, problems were resolved after our Foreign Ministry handlers in Beijing interceded by phone.

在大多数情况下，往往在我们的外交部通过电话向北京方面斡旋后，问题才获得解决。

Recognition flashed there, but s/he lurched backwards with another scream, struggling in his grip.

承认在那里闪现，但是 s/他向后以另一声尖叫声突然向一边倾斜，在他的紧握中奋斗。

The moon lurks low in your southwest sky, and sets about one hour after nightfall.

月亮在西南的天边，并会在入夜后落下。

The ubiquitous presence of phytophthora sojae in soybeans makes the threatened action all the more questionable.

中国在2001年12月加入世贸组织时同意，在入世后的8年里每年接受一次评审，第10年将是最后一次评审。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。