浮力的

It was shown that microcystis colonies floated upward to the water surface in light shading by means of monitoring Chlorophyll a contents at different water depths,.

光限制初期铜绿微囊藻群体存在逐渐上浮聚集的趋势，这与其自身的浮力调控机制有关。

Polartec Aqua Shell fabrics are neutrally buoyant, which reduces the amount of extra weights necessary for diving.

布料本身具有一定的浮力，可以帮助潜水者携带较少的铅块。

It is found that the levitation force can be remarkably enhanced by choosing optimum value of R or D, and the possibility of this enhancement for spherically curved reflectors is the largest.

发现通过选择最优化的R或D值，可以显著提高声悬浮力，并且谐振模式数越小，反射端截面半径越大，提高的程度就越大。

That is, the reading of the spring scale has been increased by an amount equal to the buoyant force.

这时弹簧秤称得的数值增加到和浮力相等的量。

This paper studies the buoyancy characters of underground water and the anti-floating design of structures.

通过分析一些地下水浮力引发的工程事故实例，提出了当前在地下结构抗浮设计中存在的问题。

Based on the experiment of this paper, numerical simulation is made to study the behavior of hot water plane negatively buoyant jets in flowing environment.

结合本文的试验，对平面热水负浮力射流同样进行了数值模拟和预报，计算得到了不同排放角度和射流比情况下的涡心、分离点位置和最大入侵高度。

The strength deck,botom,and side shell of a ship act as a box girder in resisting bending and other loads imposed on the structure .the weather deck, bottom ,and side shell also form a fight envelope to withstand the sea locally, and to provide the buoyancy which keeps the ship afloat.

船舶在抵抗弯曲和其他强加在结构上的负荷时，强力甲板、船底和船侧构成一根箱形梁。露天甲板、船底和船侧也构成一个框架局部承受海水压力，并且提供使船舶浮在水面的浮力。

The theoretical analysis shows that the wave-activity relation presented a nonconservative form in which the pseudoenergy wave-activity density is composed of disturbance kinetic energy, available potential energy and buoyant energy. The local change of pseudoenergy wave-activity density depends on the combination of shear of zonal basic flow, Coriolis force work and wave-activity source or sink as well as wave-activity flux divergence.

理论分析表明，拟能量波作用方程具有非守恒形式，其中的拟能量波作用密度主要由扰动动能、有效位能和浮力能三部分组成；拟能量波作用密度局地变化除了受拟能量波作用通量散度影响之外，纬向基本气流切变、科氏力作功以及由非绝热加热和水汽相变所构成的波作用源汇项对其也都有贡献。

ABSTRACT The characteristics of negatively buoyant jets in static and flowing environment have been investigated in this paper.

本文研究了静止环境和流动环境中的负浮力射流的特性。

The lever-ball float type trap employs the buoyancy and leverage principles: to make the ball float ascend or descend by the change in the liquid level and then the ball float drives the lever to make the valve disc depart from or touch the valve seat to realize drainage and close the block vapor.

杠杆浮球式是利用浮力原理和杠杆原理，通过液位的变化使浮球上升或下降，浮球驱动着杠杆使得阀瓣离开或接触阀座达到开启排水和关闭阻汽的作用。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。