Conical rail bond pi Based on the characteristics of hollow wave guide for CO2 laser delivery, a cone-shaped wave guide coupler system was designed and fabricated in this work. 圆锥形钢轨导接线塞钉针对co2激光传输用空芯波导的特点,设计、制备了锥形空芯波导耦合器系统。
On the basis of an analysis on present financing modes and investment circumstances of urban rail transit construction in China, the significance of issuing bonds for urban rail transit construction in China is elaborated considering the characteristics of bond financing and the present situation of domestic bond market. 对目前国内城市轨道交通融资模式和环境进行了分析,在考虑债券的融资特点及国内债券市场现状的基础之上,深刻分析了发行轨道交通企业债券的意义;
The manufacturing technologies of the steel aluminum composite conductor rail in the world can be classified into three categories, namely mechanical bond, mechanical/ metallurgical bond and metallurgical bond. 世界上钢铝复合导电轨制造技术,可归纳为机械结合、机械/冶金结合、冶金结合三大类。