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1)  second-class highway
二级公路
1.
Discussion on the second-class highway design common fault
二级公路设计通病的探讨
2.
Based on the theory of the vehicle moving stability,the effects of beyond-standard second-class highway in the mountains on traffic safety are analyzed,and some improving measures of our safety guarantee engineering are proposed.
根据汽车行驶的稳定性理论,详细分析了山区二级公路超限危险路段的线型特征对安全行车的影响,然后提出了我国实施"安保工程"的一些改善措施。
3.
Based on the summary of the common failure of the similar bridge abutment in the second-class highway of Yongbin stage in the National Route 322,the author analyzes the concrete cause of the failure,puts forward the rational reinforcement treatment scheme,the observation proves that the treatment scheme obtains the good effect,the problems are basically solved.
在总结国道322线邕宾段二级公路上同类型桥梁桥台普遍出现的病害基础上,分析了病害产生的具体原因,并提出了合理的处理加固方案,经过观察证明,所采用的处治方案取得了较好的效果,基本解决了存在的问题。
2)  class Ⅱ highway
二级公路
1.
A Relationship between the Construction of the Class Ⅱ Highway and Facilities along the Highway Line;
二级公路建设与沿线设施的关系
3)  secondary road
二级公路
1.
With the development of highway traffic in our country,the setting of traffic signs becomes more and more normative,however,there are still lots of problems when installing at secondary road.
随着我国公路交通事业的发展,交通标志的设置日趋规范,但在二级公路的标志设置中仍然存在着许多问题。
4)  second class highway
二级公路
1.
Research on the traffic simulation of second class highway in cold area;
寒冷地区二级公路路段交通微观仿真研究
5)  Secondary road charges
二级公路收费
6)  Class Ⅱ Highway with two-lane
双车道二级公路
1.
After analyzing the operating speed by SPSS software respectively,the operating speed model for passenger cars on Class Ⅱ Highway with two-lane is established.
通过选取双车道二级公路典型路段,采用路段实测法,收集小半径曲线段的线形资料及速度数据,分析了小客车和中型货车在半径R为200 m、250 m3、00 m、400 m、500 m6、00 m、650 m的平曲线上的速度数据,得到相应的运行速度V85。
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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