单级

Air-breathing hypersonic vehicle has been the next generation single stage to orbit vehicle and hypersonic cruise vehicle.

吸气式高超声速飞行器是下一代单级入轨和高超声速巡航研究的重点飞行器。

The study is about a single stage ammonia/water absorption refrigeration system.

本文对一套功率为2kW的单级氨水吸收式制冷实验装置进行了研究。

Therefore, in the lower part load, the gas engine heat pump at a lower energy efficiency.

因此在部分负荷较低的情况下，燃气机单级离心泵的一次能源利用率较低。

In only 12 month, Tanan Shenran 150 thousand M3 per day LNG project has finished the work from the very beginning to the very end. This project has created a milestone on China gas history, it is not only the first on constructing period, but also make many first on technology: The first self-owned intellectual property LNG plant which is nitrogen expanding and recycling refrigerating in China; the first plant which are all made in China; the first plant which use the parallel connection temperature expander refrigerate technology; the first use the pressure dryness vaporizer technology on Nitrogen gas liquefaction and purity system; the first use the deep fat stove technology in purity system; the piston nitrogen compressor is the biggest in China and etc.

短短12个月内，泰安深燃日产15万立方米液化天然气工程项目完成了从立项到投产的全部建设工程，该套项目的顺利投产完成创造了中国燃气史上的一个新的里程碑，不仅在建设周期上创造了第一，在技术方面同样创造了多个第一：我国首个具有自有知识产权的氮气膨胀、循环制冷液化天然气设备，填补了国内在这一技术领域的空白，对我国名族天然气液化事业的发展产生了积极的推动作用；首次实现设备国产化达到100%；首次采用并联双温区的膨胀机制冷技术；首次将等压干燥脱水技术应用于天然气液化系统、净化系统；首次在净化系统采用了导热油炉、单炉双温区共用形式；所采用的单级双列活塞式氮气压缩机位国内最大等技术。

In only 12 month, Tanan Shenran 150 thousand M3 per dayLNG project has finished the work from the very beginning to the very end. This project has created a milestone on China gas history, it is not only the first on constructing period, but also make many first on technology: The first self-owned intellectual property LNG plant which is nitrogen expanding and recycling refrigerating in China; the first plant which are all made in China; the first plant which use the parallel connection temperature expander refrigerate technology; the first use the pressure dryness vaporizer technology on Nitrogen gas liquefaction and purity system; the first use the deep fat stove technology in purity system; the piston nitrogen compressor is the biggest in China and etc.

短短12个月内，泰安深燃日产15万立方米液化天然气工程项目完成了从立项到投产的全部建设工程，该套项目的顺利投产完成创造了中国燃气史上的一个新的里程碑，不仅在建设周期上创造了第一，在技术方面同样创造了多个第一：我国首个具有自有知识产权的氮气膨胀、循环制冷液化天然气设备，填补了国内在这一技术领域的空白，对我国名族天然气液化事业的发展产生了积极的推动作用；首次实现设备国产化达到100%；首次采用并联双温区的膨胀机制冷技术；首次将等压干燥脱水技术应用于天然气液化系统、净化系统；首次在净化系统采用了导热油炉、单炉双温区共用形式；所采用的单级双列活塞式氮气压缩机位国内最大等技术。

The influence of the one-stage single-lens optical system on the divergence angle of Gaussian laser beam is analyzed theoretically.

在理论上分析了单级单透镜光学系统对激光高斯光束发散角的影响。

The company mainly engaged in IHF Chen Fu-chemical pump, IH chemical centrifugal pumps, IS, ISZW, ISW series of single-suction centrifugal pumps, FJX series of forced circulation pump, WB series stainless steel whirlpool pump, LJYA amine-phosphate material pump, FY-liquid pumps, GNF-screw pump, IHG, ISG, SG series of pipeline pump, CQ-magnetic pump, AY-type pumps, CPN not plug the base pumps, YL series dedicated filter pump, ZW, ZWF series without plug Self-suction pumps, DF series dedicated pump starch, FSB fluoride plastic pump, FBR temperature-pressure pump printing and dyeing, AFB series Naifushibeng, LH phosphating solution for pump, CZ series of standard chemical pump, ZH series of self-suction centrifugal pump chemicals , UHB-ZK series of mortar decay resistance wear-resistant products such as pumps, the material is: 1 Cr18Ni9Ti, 1Cr18Ni12Mo2Ti, 304,904,316,316 L, CD4MCu, K alloy, F46, PP, PE, widely used in petroleum, chemical, electric power, Printing and dyeing, environmental protection, metallurgy, food and other industries.

本公司主要经营IHF型化工衬氟泵，IH型化工离心泵，IS、ISZW、ISW系列单级单吸离心泵，FJX系列强制循环泵，WB系列不锈钢旋涡泵，LJYA 型磷胺料浆泵，FY型液下泵，GNF型螺杆泵，IHG、ISG、SG系列管道泵，CQ型磁力泵，AY型油泵，CPN无堵塞碱泵，YL系列压滤机专用泵，ZW、ZWF系列无堵塞自吸泵，DF系列淀粉专用泵，FSB氟塑料泵、FBR型耐温耐压印染泵，AFB系列耐腐蚀泵，LH磷化液专用泵，CZ系列标准化工泵，ZH系列自吸式化工离心泵，UHB-ZK系列耐腐耐磨砂浆泵等产品，材质有：1Cr18Ni9Ti、 1Cr18Ni12Mo2Ti、304、904、316、316L、CD4MCu、K合金、F46、PP、PE等，广泛应用于石油、化工、电力、印染、环保、冶金、食品等行业。

Nadequate flow of reasons: the actual lift pump lift more than allowed; speed does not support or belt slip, low speed; axial flow pump blade installation angle is too small; smoke way too high; at the end of valve, pipe and impeller Impeller partially plugged or defect; water possession of a serious leak.

SW卧式管道离心泵流量不足原因： IS、IR卧式单级单吸清水离心泵实际扬程超过允许扬程；转速不配套或皮带打滑、转速偏低；轴流泵叶片安装角太小；吸程过高；底阀、管路及叶轮局部堵塞或叶轮缺损；出水管漏水严重。

Nadequate flow of reasons: the actual lift pump lift more than allowed; speed does not support or belt slip low speed; axial flow pump blade installation angle is too small; smoke way too high; at the end of valve pipe and impeller Impeller partially plugged or defect; water possession of a serious leak.

SW卧式管道离心泵流量不足原因：IS、IR卧式单级单吸清水离心泵实际扬程超过答应扬程；转速不配套或皮带打滑、转速偏低；轴流泵叶片安装角太小；吸程过高；底阀、管路及叶轮局部堵塞或叶轮缺损；出水管漏水严重。

STL series of single-stage single-suction vertical pipeline centrifugal pump for direct-coupled pipeline structure, the impeller mounted on motor shaft extended, with smooth operation of simple structure, easy maintenance overhaul, easy installation, and covers an area of provincial (and ordinary horizontal Pump covers an area savings of more than 30% above) and other characteristics

STL系列单级单吸立式管道离心泵为直联式管道泵结构，叶轮安装于电机加长轴上，具有运行平稳结构简单、维护检修简便、安装方便及占地面积省（与普通卧式泵比占地面积节省30%以上）等特点

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。