单级

Duralumin gasreducer:Double stage type diaphragm pressure-reducing structure and stainless steel diaphragm are suitable for non- corrosive gas,standard gas,clean gas and mixed gas.

硬铝气体减压器：单级式膜片减压结构，不锈钢膜片，保证输出压力的稳定，适用于非腐蚀性气体、标准气体、纯净气体、与混合气体。

Duralumin gasreducer:single stage type diaphragm pressure-reducing structure and Thicken rubber diaphragm are suitable for non- corrosive gas,standard gas, it could ensure the steady output pressure, it hascharacterristics of big scope of application, steady performance and good cost performance.

硬铝气体减压器：单级式膜片减压结构，加厚橡胶膜片，保证输出压力的稳定，适用于非腐蚀性气体、具有适用面广、性能稳定、性价格比高。

The potential failure surface is explicitly specified in the current specifications for the single erective RSRW, but the universal calculation model of the RSRWs with different step widths is lacking.

现行规范仅对单级直立式加筋土挡墙的潜在破裂面有明确规定，尚无适于不同台阶宽度的加筋土挡墙潜在破裂面的通用计算模式。

With present fuels, scientists agree that a single rocket can not attain escape velocity.

如果采用目前的燃料，科学家们认为单级火箭达不到逃逸速度。

But some of those systems adopt one layer DDC structure that is unreliable and badly expansible, and can't satisfy the requirement of general management and hierarchy management in fermentation process.

但在这些实现的系统中，有很大一部分采取单级的直接数字控制系统结构，可靠性和可扩展性都比较差，很难满足对全厂的发酵过程进行全局管理和分级管理的需要。

There are two types of shaft seal of ZGBpumps:expeller seal combined with packing seal and mechanical seal.

对于单级采用填料加付叶轮组合式密封，轴封水压力一般为0.2-0.3MPa。

For single-stage pump, the packing seal combined with expeller should be utilized. And the sealing water pressure is equal to or larger than 0.2Mpa.

对于单级的渣浆泵，建议采用填料加付叶轮组合式密封，轴封水压力一般不低于0.2MPa。

When heterotrophic bacteria were washed out while autotrophic bacteria were accumulated, the sludge mainly was bacilliform floccule, but the sludge was petallike when the steady nitrification was set up and part nitrogen removal function was reached. The lack of organic carbon source made autotrophic bacterium become the dominates and the microbial community structures become simple.

经过成功启动并稳定运行后，单级自养脱氮系统内随着反应器内有机碳源的减少，系统中自养细菌在同异养细菌的竞争中逐渐占据优势地位，适应能力较弱或对有机碳源量要求较高的异养细菌则被大量淘汰，微生物群落结构与接种污泥相比已变得简单且较稳定，种群多样性降低。

The structure of RIP was presented and the fuzz controller for RIP was designed.

本文介绍了单级旋转倒立摆的构成以及系统结构，并设计了模糊控制器。

In them, choose the best control scheme, PD control scheme with two loops, as the real-time control scheme, and tests it on the linear 1-stage inverted Pendulum real-time control system, The result demonstrate that this strategy can realize the position of dolly and the angle of haulm to be close-loop controlling simultaneity.

通过在实际单级倒立摆装置上的实时控制试验证实所提出的控制方案可以实现了对小车位置和摆杆偏角的同时闭环控制。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。