查询词典 concrete

The problem of the error of calculation formula calculating the variance of grouping data within distances in statistics was put forward,and the concrete forms of correcting formula were given by the theorem of addition and the variance of even distribution.

提出统计学中的组距分组资料方差和标准差计算公式误差问题，由方差的加法定理和均匀分布方差给出分组资料方差计算和标准差计算的修正公式具体形式，并就均匀分布数列和正态分布数列组内方差平均数进行了讨论

It is shown from the analysis results that in order to achieve the submarine tunnel service life of 100 years,the side concrete coating thickness in the sea area tunnel section is recommended to be 60 mm and additional reasonable construction error,the con.

通过对胶州湾海底隧道工程所在地的环境作用进行分析，以基于钢筋混凝土劣化模型的设计方法，对海底隧道衬砌混凝土的耐久性进行研究。

Based on the theory of shrinkage, capillary force theory, the influence of road concrete additives in common use on surface tension of water is studied, and the results show that the influence of water reducer is very small whereas shrinkage-reducing agent and air entrainer can reduce surface tension of solution significantly. The relation between surface tension and additive dosage are non-linear relation. Each additive has an obvious critical micelle concentration.

从混凝土收缩的基本理论——毛细管张力理论出发，通过道路混凝土外加剂对水的表面张力的影响研究发现，减水剂对水的表面张力的影响很小，而减缩剂和引气剂可以大幅度降低溶液的表面张力，溶液的表面张力随外加剂的掺量呈非线性形式降低，而且都存在临界胶束浓度。

Adduce a concrete instance , let others participate in the process that you improve, you are able to get bigger stimulating and courage.

举出实际的例子，让别人参与你改善的过程，你会得到更大的鼓舞和勇气。

Secondly, the early age adiabatic temperature development of concrete is investigated.

并对现有常规计算方法存在的几个重要问题提出了自己的看法。

Wang's also told reporters that the trade union building consists of three relatively independent components of reinforced concrete frame structure, in order to ensure that the new office building adjacent to the eastern side of safety, blasting demolition of the west side of the main length of about 60 meters of two parts.

王还告诉记者，工会建设包括三个相对独立的组成部分，钢筋混凝土框架结构，以确保新办公楼毗邻东面的安全，爆破拆除西侧主要长度约60米的两个部分。

Combined with Zhongshan-gate in Nanjing,by means of investigation and admeasurement, theoretical analysis and finite element simulation, the security analysis and reinforcement research of ancient brick-and-clay city gate structure are performed. The results would be the scientific reference to the reinforcement of brick-and-clay city gate. At the same time, the reinforcement method of barking concrete structure, another available method to renovations of brick-and-clay city gate, is put forward in this paper.

本文结合南京中山门，综合运用调查检测、理论分析和有限元模拟的方法，对砖土拱城门结构进行了安全性分析和加固技术研究，为砖土拱城门结构的加固维修提供切实可靠的科学依据；同时提出内衬混凝土空间箱型结构的加固方法，为今后对其它砖土拱城门结构的研究保护提供一定的参考。

The administration is legally our country legislative work important content,is rules a nation legally the principle in the administrative domain concrete utilization.

依法行政是我国法制建设的重要内容，是依法治国原则在行政领域的具体运用。

In this paper, low-clinker cement is mainly developed from fly ash and coal gangue, in order to build tow new gel system, and admix concrete with various good performances.

本文分别以粉煤灰、煤矸石为主要原料研制少熟料水泥，从而提出两种新的胶凝体系，以此配制出了性能优良的少熱料水泥混凝土。

Is specialized in producing all types of concrete admixture of high-tech enterprises.

是专业生产各类型混凝土外加剂的高新技术企业。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了