质点

Each particle of liquid through a leaf, it was an energy.

液体质点每经过一次叶片，就获得一次能量。

In chapter 3, Multi-Compartment Electrolyser was used to pre-fractionate protein extract from mouse liver.

实验证明，经过液相等电聚焦预分离富集后，碱端区域的双向凝胶电泳图谱质量显著提高，蛋白质点更清晰，并明显增多；蛋白质谱鉴定的可信度提高，鉴定成功的碱性蛋白质，尤其是极碱蛋白质数目明显增加。

Using of optical microscopy, X-ray diffraction, transmission electron microscopy, hardness and tensile testing, the effect of thermal exposure at high temperatures on the microstructures and of high-temperature tensile properties of rapidly solidified AlCrYZr have been studied. The results show that there are two main phases,Al20Cr2Y(cubic, a=1.437 nm) and DO23Al3Zr(terganal, a=0.4 013 nm , c= 1.732 nm), in the as-solidified alloy. The Al20Cr2Y phase can maintain its cubic structure at 500℃, but the particles coarsen remarkably and even become lumpish. In coarse lumpish Al20Cr2Y phase the plane faults and twin structures exist.

摘 要：采用金相、 X射线衍射、透射电镜、硬度测定和拉伸试验研究了高温热暴露对快速凝固AlCrYZr合金显微组织影响和高温下力学性能的热稳定性，结果表明，快速凝固AlCrYZr合金主要第二相为Al20Cr2Y(立方，a=1.437nm)和DO23Al3Zr(正方，a=0.401 3nm， c=1.732nm)，Al20Cr2Y在500℃热暴露尚能保持其立方结构，但质点明显粗化，甚至块状化，在粗大的Al20Cr2Y相中存在有层错和孪晶结构。

Thosepoints were digested, analyzed with MALDI-TOF-TOF-MS mass spectrograph andsearched from protein database.

对差异蛋白质点进行胶内消化、MALDI-TOF-TOF-MS质谱仪鉴定和数据库搜索鉴定差异蛋白质。

This phenomenon cannot be well explained by the four classical intensity theories and Mohr＇ s intensity theory.

而质点平衡理论得出与第三、第四强度理论不同的结论，并且接近其实验结果。

The general expression of the moment of momentum of particles relative to an arbitrary point is discussed including application of the theorem of the plane movement in rigid body .

讨论了质点系相对于任意点的动量矩定理的一般表达式及该定理在刚体平面运动中的应用。

By using the theorem of moment of momentum with respect to the mass center, the ship motion is devided into translation and rotation respect to the ship mass center, and the six-degree-freedom nonlinear equation can be deduced based on the exactly analysing the force acting on the ship.

基於刚体运动学理论，将船舶在波浪中的运动分解为平动和绕质心的转动，在分析了船舶受力情况的基础上，运用质点系相对於质心的动量矩定理和Newton第二运动定律建立了船舶的六自由度运动的非线性藕合方程。

Based on the Poisson bracket and the discriminant of integral of motion,we prove the problem that the moment of momentum is the integral of motion when the mass point is affected by central force.

运用泊松括号，依据运动积分判别式，证明了质点受有心力作用时，其动量矩是运动积分的问题。

At last, the particle movement and theadvection-diffusion movement of pollutant in Tianjin sea area were carried out.

最后，考虑了排污的影响，计算了天津海域排污口处的质点在渤海海域的运动状况和排出污染物的对流扩散运动及其分布。

Up to now, we have been concerned only with the motion of particles.

到目前为止，我们只关心质点的运动。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。