加一个双杆吗？
非旋转式，双作用，双杆。
研究结果表明：双杆摆系统有着丰富的混沌现象。
The study result demonstrates that the double pendulum system is of abundant chaos.
主要研究了六杆单、双次间歇机构综合的计算机综合方法。
The computer synthesis method for six-bar single and double dwell mechanism is studied in detail.
四川绵阳飞云大桥的主桥系三跨系杆拱桥，横向设两根拱肋，构成“双弓体系”。
Two arch ribs are installed in transversal direction to form a"double bow system".
四川绵阳飞云大桥的主桥系三跨系杆拱桥，横向设两根拱肋，构成“双弓体系”。
Two arch ribs are installed in transversal direction to form a"double bow system".
应用推荐