1)  two-stage turbocharging
二级增压
1.
The model of two-stage turbocharging engine was set up on the basis of the model of prototype engine,and the matching calculates had been done.
针对高空小型飞机的动力要求,对某一级增压的活塞式航空发动机进行了二级增压系统的匹配设计分析。
2)  two stage supercharger
二级增压器
3)  two stage turbocharging system
二级增压系统
1.
In order to study the performances of two stage turbocharging system,the special two-stage turbocharging system test bench was set up and the compressor performance experiment was carried out.
为了研究所匹配的二级增压系统的性能,在专门的二级增压系统试验台架上进行了二级压气机性能试验。
2.
To study centrifugal two stage turbocharging system s surge and the affecting factors,a test bench special for two stage turbocharging system is set up.
为研究径流式二级增压系统的喘振及其影响因素,建立了二级增压系统压气机性能试验台架。
4)  two stage supercharged diesel engine
二级增压，柴油机
5)  regulated two-stage turbocharging system
可调二级增压系统
1.
Thermodynamic analysis was conducted on a regulated two-stage turbocharging system of a heavy-duty vehicle.
针对重型车用、带有调节阀的可调二级增压系统的涡轮级进行了热力学分析,推导了涡轮级绝热效率的计算公式,给出了高、低压涡轮流量和膨胀比的计算方法。
6)  Level Ⅱ
二级
1.
Since our CSP plant put into production, sometimes there are some communication errors occurred be tween Level I and Level Ⅱ,because of this reason, there were so many brakes in the rolling .
邯钢CSP生产线自投产以来,经常出现轧机一级自动化和二级计算机之间的通讯故障,进而导致多次停浇事故的发生。
参考词条
补充资料：电子级二氯二氢硅
分子式：  SiH2Cl2
CAS号：

性质：在室温和大气压力下是一种高可燃、腐蚀性有毒气体，阈限值-重量加权平均浓度(TLV TWA)未定，可采用氯化氢的TWA值，即5×10-6(ACGIH)。于21.1℃和大气压力下气体相对密度(空气=1)3.48；气体密度4.228kg/m3；液体密度1235kg/m3(21.1℃)，1188kg/m3(40.6℃)。沸点8.2℃。熔点-122℃。在空气中的可燃限4.1％～98.8％(体积)；自燃温度58℃。与水或水气接触迅速水解产生二氧化硅和盐酸。国外多采用三氯氢硅歧化法生产粗二氯二氢硅，精馏法提纯；也有用多晶硅厂尾气中提取二氯二氢硅的技术路线，经精馏、络合、终端吸附可制得高纯二氯二氢硅。二氯二氢硅主要用于多晶硅外延生长以及化学气相淀积二氧化硅和氮化硅。

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