When the magnetite suspension solution was used as catalyst, crystalline bamboo-structured CNTs were obtained. Yjunction CNTs were also obtained under ambient condition.
Bceause of its specific characteristics of small size and wide band width, the double-Y or YY junction has been widely used in the design of stripline-junction circulator.
由于双y结具有尺寸小。频带宽的独特优点，目前已广泛用于带线结环行器设计。
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Abstract: Fracture failure of junction crank arm of external cylinder retraction-extension actuator of landing gear of Y-7 aircraft is analyzed in this paper.