准静力的

Based on qualitative analysis and comparison of several options for suppressing transverse vibration on deck type steel plate girder of railway bridge,conclusions are made as follows:with static reinforcing,the vibration amplitude can be suppressed to some extent,but quasi-resonance of the bridge can not be avoided,moreover,the construction is inconvenient and costly.

通过对目前抑制铁路上承式钢板梁桥横向振动的几种方案进行定性的分析和比较，认为：静力加固方案可以使桥梁振幅有所减小，但不能避免准共振现象的发生，而且工程造价较高，施工也不方便；两桥连接方案减振效果明显(减振率近50%)，比较经济也比较方便，但同样不能避免准共振现象的发生；动力减振方案可以有效的抑制桥梁的准共振现象(现场试验中减振率达51.83%)，而且工程造价较低，施工简单、方便。

The traditional method of mooring system design is the accurate static method which uses the safety coefficient to determine the anchor chain's working force. This method is fit in engineering, but it will bring in material the waste.

传统的设计锚泊系统的方法主要是采用准静力方法加安全系数来确定锚链工作状态的张力，这种方法虽然在工程上是适用的，但是会造成材料的浪费。

The parametrically excited and forcedly-parametrically excited equations of ship rolling in longitudinal and oblique seas are established.

主要研究内容和结论如下：考虑波面形状引起的船舶初稳性高的变化，假设升沉和纵摇满足准静力平衡，提出了纵浪和斜浪中初稳性高波动项的计算方法。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。