级

First, the conception of wet compression is defined. A calculation method of moist air and wet gas thermodynamics properties is set up, which treat them as real gas and can give out the results of any water-air/gas ratio. Second, the thesis build the simulation model of water injection between compressor stages of a single shaft gas turbine, based on which the stable analysis is processed and the characteristics of key performance parameters are given out, such as the variation of air flow, pressure ratio, turbine inlet temperature with the water quantities. Results showed that enhancement of power output is outstanding.

文中定义了湿压缩概念，研究适用于计算机计算的湿空气，湿燃气等实际气体的热物性计算方法，利用此法可较准确地计算任意水气比下湿空气，湿燃气的各热物性参数，建立并推导单轴燃气轮机级间喷水热力循环的数学模型，用此模型进行稳态循环分析，并得出级间喷水时燃气轮机各主要性能参数的变化规律，如随喷水量变化，空气流量、压比、燃气初温等的变化规律。

This is especially important in two-stage regulators that can trap high-pressure gas in the first stage.

这对于能够把高压气体截留在第一级的两级调整器特别重要。

This is especially important in two-stage regulator s that can trap high-pressure gas in the first stage.

这对于能够把高压气体截留在第一级的两级调整器特别重要。

The age class structure of Salix oritrepha population in alpine, cloudy and wet area of east Qilian Mountian is studied ,on two levels of genets and their ramets and sprouting branches .The results show that genets population is very short of the first and second class seedlings,and most of seedlings belong to the third and forth classes, and the development trend of population on this level is stable;on the other hand,the age structure of remets and sprouting branches population is more complete,and its age class distribution chart likes triangle, belonging to increasing type.In general,Salix oritrepha population in this area is increasing, but its reproduct way have changed in community succession process in order to accommodate varying circumstances.

从无性基株个体种群和无性克隆分株及萌生枝种群两个层次上对东祁连山高寒阴湿地区山生柳种群年龄结构进行分析，结果表明：无性基株个体种群 0~10 龄级幼苗贮备严重不足，11~20 龄级苗木所占比重最大，种群动态呈稳定型；无性克隆分株和萌生枝种群年龄结构比较完整，结构分布图呈正三角形，种群动态表现为增长型；总体上来讲山生柳种群呈增长趋势，只是在演替过程中为适应环境其繁殖方式有所改变，导致现阶段山生柳种群两个层次结构状态。

Combining the electro-optically cavity-dumped technology with MOPA system could realize the laser output with nanosecond pulse width, gigawatt peak power and nearly diffraction limited beam quality.

通过将电光腔倒空技术和MOPA结构放大器系统相结合可以实现ns级脉宽、GW级峰值功率以及近衍射极限的高光束质量激光输出。

It is an effective way to reduce cost to produce 400 MPa grade Ⅲ reinforced bar by controlled rolling and cooling .

采用控轧控冷的方法生产400 MPa级的Ⅲ级钢筋，可以降低成本。

It is an effective way to reduce cost to produce 400 MPa grade Ⅲ reinforced bar by controlled rolling and cooling.

用热模拟试验机测定了20MnSi钢的动态CCT曲线，确定了开发20MnSiⅢ级钢筋的生产试验方案，所生产的螺纹钢筋的性能指标达到了Ⅲ级钢筋的标准要求。

According to the national conditions of our country and the great changes of building construction market at present,some proposals concerning with the popularization of grade Ⅲ steel bar with strength of 400 MPa,developing the small diame...

根据我国国情及建筑市场的变化，提出了大力推广强度为 4 0 0MPa的Ⅲ级钢筋，发展小直径Ⅱ，Ⅲ级钢筋，优化或淘汰冷加工钢筋，发展与钢筋有关的配套技术等建议。可供建筑设计部门及治金企业参考。

In view of performance characteristic, economic benefit, co nn ecting technique etc, of new Ⅲ grade hot rolling reinforcing steel bar the pre sent status on application and generalizat i on was discussed.

从新Ⅲ级钢筋的性能特点、推广应用情况、经济效益、连接技术等方面对我国新Ⅲ级热轧带肋钢筋的推广应用现状进行了论述。

HRB400 steel bars, the 400 MPa hot rolled steel bar, which is called new grade III steel bar, has been taken as the one of 10 new technical spreading the application mainly, listed in revised newly code, so spread application as leading steel bar in reinforced concrete structure.

HRB400级钢筋已作为高效钢筋被列为重点推广应用的建筑业10项新技术之一，早在1998年建设部就明确提出：&新Ⅲ级钢筋是专门为建筑结构应用开发的新型钢筋，该钢种已列入新修订的国家规范标准，应大力推广使之成为我国钢筋混凝土结构的主导钢筋&(建设部建[1998]200号文)。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。