平面桁架是一种自然离散化的杆系结构。
阐明杆系机构运动路径极值点的数学特征。
The mathematical property of the limit point in kinematic path is clarified.
介绍了一种平面杆系结构自由振动的解析解法。
The analytic method for the free vibration of plane frame structure is presented.
本文针对复杂杆系结构提出一种超级有限条的分析方法。
A super finite strip method for complex rod-systems has doveloped in this paper.
本文采用杆系有限元方法，研究了桥墩结构在地震和冰荷载作用下的响应问题。
In this paper, the responses of bridge structure to earthquake and ice loads are studied.
钻头系在由钢丝绳悬挂起来的加重杆上。
The bit was attached to a heavy length of steel suspended by a wire rope.
如果系的绳子或者捻的绳子高过容身之处的高度，你必须加一个节水滴杆。
If you tie rope or twine higher than the shelter, you should attach drip sticks.
b起吊时，绳子不要系在手轮或阀杆上。
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".
这将为设计系杆的截面形状和尺寸提供了重要的依据。
It provides an important calculate basis for design section shape and size of the rod.
这将为设计系杆的截面形状和尺寸提供了重要的依据。
It provides an important calculate basis for design section shape and size of the rod.
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