单级

It is suitable for pumping liquid (temperature under 80℃)containing fiber or suspended solid grains such as in city and factory to decontaminate sewage and dejecta .

PW型是卧式单级单吸悬臂式离心污水泵；适于抽送80℃以下带纤维或其它悬浮物的液体，供城市工矿企业排除污水粪便之用。

LQRY series hot oil pump is the second generation developed on the basis of the oil pumps abroad, basically structured as single stage single entry overhung foot supported. Pump inlet is axial suction, and outlet has its center vertically upward, which are mounted, together with the motor, at the bottom.

LQRY系列热油泵是本单位消化吸收国外油泵的基础上研制的第二代产品，基本结构形式为单级单吸悬臂式脚支撑结构，泵的进口为轴向吸入，出口为中心垂直向上，和电机同装于底座上。

QCRY series hot oil pump is the second generation developed on the basis of the oil pumps abroad, basically structured as single stage single entry overhung foot supported. Pump inlet is axial suction, and outlet has its center vertically upward, which are mounted, together with the motor, at the bottom.

QCRY系列热油泵是本单位消化吸收国外油泵的基础上研制的第二代产品，基本结构形式为单级单吸悬臂式脚支撑结构，泵的进口为轴向吸入，出口为中心垂直向上，和电机同装于底座上。

The R-2800 was an eighteen-cylinder, double-row radial engine equipped with a single-stage, single-speed supercharger.

的 R - 2800年是18缸，双排径向引擎，配备了单级，单速度增压器。

The single mechanical seals of five PHP pumps, nine PLA pumps, two THD pumps and nine ZA pumps in the acetic acid plant were changed into dual mechanical seals based on not changing main parts such as casing, impeller, shaft, bearings house etc. to solve the leakage problems of flammable, explosive, poisonous, harmful substances, such as acetic acid, methyl iodide, hydroiodic acid, and propionic acid etc.

通过对醋酸装置中所选用的5台PHP型、9台PLA型、2台THD型及9台ZA型单级卧式脚支撑化工离心泵，在不改变泵壳、叶轮、轴、轴承箱等主要部件的基础上，将原来的单端面机械密封改造为双端面机械密封或串联式机械密封，以此来防止所输送的易燃、易爆、有毒、有害高危介质（如醋酸、碘甲烷、碘化氢、丙酸等）外漏。

But the effluent ammonium in the anoxic reactor, where enough NO2 present were present, was equal to the blank system, and no ammonium was converted to such nitrogen compounds as NO-2 and N2 by Nitrosomonas eutropha using NO2 as electron acceptor, which maybe caused by lack of the function bacteria.

但在足够NO2存在并且缺氧的条件下，单级自养脱氮系统内的出水氨氮浓度与空白反应器相当，NH+4并没有被亚硝化单胞菌以NO2为电子受体氧化为NO-2和N2等化合物而得以去除，可能是因为系统内不存在该类型的亚硝化功能菌。

The results show that the penetration ratio decreases with increase of filtration velocity, the range of the most penetrating particle size is in the range of 0.15～0.20 μm, the effect of aerosol concentration on the filtration efficiency is ignore for monodisperse, the filtration efficiency of each step on multilayer is different from others for polydisperse.

研究结果表明：用玻璃纤维膜过滤清除气溶胶团粒时，对粒径在 0 15～ 0 。2 0 μm之间的团粒较难清除；透过率随流速的增加而增加；单分散气溶胶团粒浓度变化对过滤效率的影响可忽略不计；多级过滤时，各单级过滤效率差异受多分散气溶胶的影响较大。

Main products: X, B two major series of horizontal, vertical single-level, two-stage, three planet-cycloid reducer, of Circular Cylinder Worm Gear Reducer, cylindrical gear reducer, a screw lift, Construction machinery and all kinds of metal casting products ....

公司主要产品： X、B二大系列卧式，立式的单级、双级、三级行星摆线针轮减速机，圆弧齿圆柱蜗轮蜗杆减速器，圆柱齿轮减速机，丝杆升降机、建筑机械及各种金属铸造产品。。。。

Rotary vane pump has two kinds of single and two-stage.

旋片泵有单级和双级两种。

Rotary vane pump has a single-stage and two-stage two.

旋片泵有单级和双级两种。

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。