单级的

After more than 30 years of development, high-speed single-stage centrifugal blowers have been in the field of urban sewage treatment plays a decisive role.

经过三十余年的发展，高速单级离心式鼓风机已经城市污水处理领域中具有举足轻重的地位。

For the first time, a fully integrated CMOS cascaded single-stage distributed amplifier has been designed, fabricated and tested.

利用CMOS制程所设计的串接单级分布式放大器第一次被成功的制作与测试。

This single grade water loop vacuum pump is designed with assimilation of the international standard.

本产品是直联式单级水环真空泵，综合了国内外先进的同类产品而研制的。

The structure of database of hydraulic model with excellent cavitation characteristic and the design process of the database are completely described, and the building of illustrational database of the single-stage pump and multi-stage pump were presented.

完整描述了高汽蚀性能水力模型库的结构及高汽蚀性能水力模型的设计过程，建立了单级泵和多级泵高汽蚀性能水力模型库。

The nitrosification of suspended activated sludge of SBBR one-step completely nitrogen removal process could be defined as the first order reaction.

单级自养脱氮系统中悬浮态活性污泥的亚硝化反应可以近似按一级反应表示，反应速率随生物量的增加而增加。

The activities of nitrosification and anaerobic ammonium oxidation of both activated sludge and biofilm also were studied. Results showed that the nitrosification rate of activated sludge was 2.89 times than biofilm. AOB was the dominate bacteria in activated sludge.

单级自养脱氮系统中的活性污泥及生物膜样品均具有亚硝化活性，其中活性污泥最大比氨氧化速率为0.234mgN/mgVSS·d，生物膜为0.081mgN/mgVSS·d，活性污泥亚硝化活性是生物膜的2.89倍左右。

For the model system, the reaction time decreased from 24 h to 7 h at 50 ℃ by adding the surfactant of hexadecyltrimethyl ammonium bromide into the reaction systems, and the sulfur content was detected to be below 10×10^-6 after only oxidation process.

对于实际汽、柴油体系，通过添加表面活性剂，氧化过程中油水相比可从1：1降低为25：1，大大减少了氧化剂用量，且氧化后萃取的单级脱硫率大于50％，优于直接萃取过程的脱硫率。

The rattling model of a one stage gear system is established,in which mass unbalance,speed fluctuation of driving shaft and backlash of the gear pair are considered.

在考虑不平衡质量、主动轴转速波动及齿侧间隙的情况下，建立了单级齿轮传动系统的拍击振动模型。

The requirements for the specific impulse and mass-to-thrust ratio of the bipropellant and tripropellant engine are studied, and the calculated isolines of vehicle dry mass variation with the average engine specific impulse and the sea-level engine mass-tothrust ratio are also given.

探讨了单级人轨运载器对液氧／液氢发动机和液氧／煤油／液氢三组元发动机比冲和质推比的需求，计算给出了运载器干质量随发动机比冲和质推比变化的等值线图。

At 100 C SAE 15W-40 and SAE 40 oils will have similar viscosity - BUT above 100C the multigrade oil will remain thicker than the SAE 40 providing even better protection than the monograde oil.

在100摄氏度下，SAE 15W-40和SAE 40润滑油具有类似的粘度–但是在100摄氏度以上，多级润滑油会比SAE 40更稠厚，从而能够提供比单级润滑油更好的保护功能。

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。