距离单位

A unit of luminous flux '' to the amount of light given out through a solid '' of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions .

光通量单位''一国际烛光照射在距离为一厘米面积为一平方厘米的平面上的光通量。

A unit of luminous flux equal to the amount of light given out through a solid angle of 1 steradian by a point source of 1 candela intensity radiating uniformly in all directions.

光通量单位等于一国际烛光照射在距离为一厘米面积为一平方厘米的平面上的光通量。

A unit of '' flux equal to the amount of light given out through a solid angle of 1 steradian by a point '' of 1 candela intensity radiating uniformly in all directions .

光通量单位等于一国际烛光照射在距离为一厘米面积为一平方厘米的平面上的光通量。

This long range bomber is great for flattening structures and heavily damaging closely packed units.

这种远距离轰炸机能在瞬间铲平建筑物，并把挤在一起的单位轰成渣。

The curvature of a curve; the magnitude of the derivative of its unit tangent vector with respect to distance on the curve:.

曲线的曲率；为单位切向量对距离取导数所得向量的大小

DT/ds| The curvature of a curve; the magnitude of the derivative of its unit tangent vector with respect to distance on the curve:|dT/ds

曲线的曲率；为单位切向量对距离取导数所得向量的大小

This thesis contributes to geometry compression in the following aspects: Proposes a method of progressive spherical mesh parameterization based on local parameterization by directly projecting the deleted vertices to its neighborhood. Based on spherical mesh paramterization, an adaptive subdivision remeshing method by progressivly redistributing of sampling points is proposed, by this means, the main geometry information of the original mesh can be captured with only a small amount of samples, it can also be used in mesh simplification. By regarding attributes binded on mesh vertices as geometry signals and transferring them onto a uint sphere by means of spherical mesh parameterization, meshes with different attributes are compressed with spherical wavelet successfully with high compression rate. As a kind of lossy geometry compression technique, two mesh simplification algorthimes are also presented in this thesis.

归纳起来，本文的主要贡献有：提出了以直接投影局部参数化方法为基础的网格累进球面参数化方法；在网格球面参数化方法的基础之上，提出了一种基于累进优化布点方案的网格细分采样方法，该方法可以用很少的采样点就可以捕获到网格的主要特征，因此我们也将其用于后面的网格简化工作当中；通过将网格顶点上定义的各种属性看成几何信号，并以网格球面参数化为手段将几何信号迁移到单位球面上，从而成功地实现了用球面小波对各种几何信号的压缩；作为一种有损压缩方法，本文还提出了基于统一距离的网格简化算法和基于重采样的网格简化算法。

When digit signal orbital circuit is adopted in the equipment, which is used to transmit train-to-wayside information and location train position, the length of digital signal orbital circuit should be the minimal measure unit of distance interval between trains.

采用数字轨道电路作为车－地信息传输设备及列车定位设备时，列车之间的安全间隔距离必须以数字轨道电路的长度作为最小计量单位。

A unit of energy equal to the work done when a force of1 newton acts through a distance of1 meter .

焦耳能量单位，相当于1牛顿的力使物体移动1米的距离所做的功

A cgs unit of work or energy; the work done by a force of one dyne acting over a distance of one centimeter.

厘米克秒制功或能单位；一个一达因的力使物体沿力的方向通过一厘米的距离所做的功。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。