查询词典 zero point

Therefore there exist the so called vacuum fluctuations. In the QED, for example, there exist the effects of zero-point oscillations of photons, the effects of vacuum polarization of electron-positron paris, and so on. They all could result in observable consequences , such as the anomalous magnetic moment of the electron, the spontaneous emission of atoms in excited states, the Lamb shift and the Casimir effect, which have been verfied in experiments.

例如，在量子电动力学中真空中存在着光子的真空零点振动效应，正负电子对的真空极化效应等等，它们都导致可观测的物理效果，如磁矩反常、激发态原子自发辐射、兰姆移动、卡西米尔效应等。

By reason of the dipole directivity of particle velocity sensor and also the acoustic intensity averagor, and its being able to realize the electronic rotation, coherent interferences can be effectively suppressed by skillful use of its zero point and extremal point.

振速传感器和平均声强器具有偶极子指向性，并且该指向性可实现电子旋转。巧妙利用偶极子指向性的零点和极值点，可有效地抑制声场中的相干干扰。

To start the process, hold down the cloth measuring tape at the zero point at the gunwale, and then pull the measuring tape over the hull to the center line thread at the 18 inch point.

启动过程中，按住布测磁带在零点在gunwale ，然后把测量磁带船体该中心的路线，线程在18点半英寸。

How to measure the program zero point location on the machine Figures 11-3 and 11-4 show a setup for a vertical machining center and stress how the program zero piont measurements can be made.

如何到尺寸那计画零点位置在机器上图 11-3 和 11-4 表演一种装备为一垂直的机制中心和压迫力如何那计画零 piont 测量罐子是制造。

It is proposed that the zero-point vibration term should be deleted in a thermal UEOS,and the parameters can not be directly taken as experimental data at a reference temperature,VR,BR,B′R and γGR,but their values at absolute zero temperature,V0,B0,B′0 and γG0.An approach is proposed to solve V0,B0,B′0 and γG0 from VR,BR,B′R and γGR.The approaches are applied to three typical universal EOSs,including the Baonza, mMNH and Vinet EOSs.

指出考虑热效应的通用状态方程中不应该包含零点振动项，方程参数不应该直接取为参考温度下的实验值VR、BR、B′R和γGR，而应该取为零温下的数值V0、B0、B′0和γG0；提出了一种从VR、BR、B′R和γGR求解V0、B0、B′0和γG0的方法。

The single point energy has been calculated at the QCISD/6-311++G** level, and zero point energy correction has been considered.

对单点用QCISD/6-311++G**计算了能量，同时进行了零点能校正。

Further more, the related reaction barriers were evaluated on the basis of single point energy with zero point vibration correction, and the distribution of natural charge was analyzed at MP2/6-311++G** level.

同时在MP2/6-311++G**水平上对各驻点做了单点能计算和零点能校正，计算出各反应通道的活化能，进而确定了该反应的主反应通道，其活化能为42.52 kJ/mol。

We shall call this point the zero point, or the origin.

我们将称这点零点或者起源。

Hence, the kinetic energy of the system is zero when its potential energy has its maximum value (choose the static equilibrium position of the system as the zero point of potential energy).

当振体运动到距静平衡位置最远时，速度为零，即系统动能等于零，势能达到最大值（取系统的静平衡位置为零势能点）。

Since x-coordinate is the low word of lParam and the members of POINT structure are 32-bit in size, we have to zero out the high word of eax prior to storing it in hitpoint.x.

因为x坐标值规定存放在lparam的低字节(16位)中而我们的存放在point结构变量中的坐标值是32位的，所以我们必须用0填充eax的高字节（16位）并把它存贮在hitpoint.x变量中。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。