漂浮

He was out of the shipping lane s and float ing in a life raft , alone.

他在救生艇里孤独地漂浮着，远离了航道。

Life vest will help you float in the water.

救生衣可以让你在水上漂浮。

It would float in the oil and give light.

它会漂浮在油中，发出亮光。

Firstly,based on the lagrangian formulation and the relationship of the system linear momentum conversation,the dynamic equation of a free-floating space robot is derived.

首先，由系统动量守恒关系和拉格朗日第二类方法，建立了漂浮基空间机器人的系统动力学方程。

Firstly, with the Lagrangian formulation and the relationship of the system linear, angular momentum conversations, the full-controlled dynamics equation of the system was derived.

由拉格朗日第二类方法及系统动量、动量矩守恒关系，建立了漂浮基空间机械臂完全能控形式的系统动力学方程。

The mentioned control scheme can effectively control two joint of space manipulator to stably track the desired trajectory in joint space. It has obvious advantages that with needless feedback and measured the position, velocity, acceleration, attitude angle velocity and attitude angle acceleration of the floating base. At the same time, no requirements for the dynamic equations of the system are linearly dependent on inertial parameters.

文中提到的控制方案能够有效地控制漂浮基空间机械臂的载体姿态及机械臂关节，可以协调地完成期望的轨迹运动，并具有不需要反馈和测量空间机械臂载体的位置、移动速度、移动加速度，同时也不要求系统动力学方程关于系统惯性参数呈线性函数关系的显著优点。

A sand snake of southwestern United States; lives in fine to coarse sand or loamy soil in which it 'swims';''.

一种产于美国西南部的沙蛇；生活在细沙或粗沙或漂浮在肥沃的土壤上；带条纹形似银环蛇。

Ship speed was first calculated by dropping overboard a log attached to a reel of line knot ted at regular intervals; the number of knot s exposed while the log drifted and a sandglass emptied gave the vessel's speed in knot s.

船的速度最早的计算方法是往船外丢上一节木头，上面绑着一捆绳子，每隔固定的间距打个绳结；当木头漂浮而暴露在外绳结数目，加上沙漏的时间，就得到船的速度，称为节。

Ship speed was first calculated by dropping overboard a log attached to a reel of line knotted at regular intervals; the number of knots exposed while the log drifted and a sandglass emptied gave the vessel's speed in knots.

船的速度最早的计算方法是往船外丢上一节木头，上面绑着一捆绳子，每隔固定的间距打个绳结；当木头漂浮而暴露在外绳结数目，加上沙漏的时间，就得到船的速度，称为节。

Ship speed was first calculated by dropping overboard a log attached to a reel of line knotted at regular intervals; the number of knots exposed while the log drift ed and a sandglass emptied gave the vessel's speed in knots.

船的速度最早的计算方法是往船外丢上一节木头，上面绑着一捆绳子，每隔固定的间距打个绳结；当木头漂浮而暴露在外绳结数目，加上沙漏的时间，就得到船的速度，称为节。

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。