质子的

It consists of positively charged protons and neutral neutrons, known collectively as nucleons, held together by the strong force.

由带正电的质子和不带电的中子组成，这两者总称为核子，由强核力使其结合。

It consists of positively charged protons and neutral neutron s, known collectively as nucleons, held together by the strong force.

由带正电的质子和不带电的中子组成，这两者总称为核子，由强核力使其结合。

It was found that Lewis acid-metal is a preferable catalyst system for the polymeri- zation of aromatic nitriles, and the polymerization rate is as about 10 times fast as Lewis acid alone.

结果表明以含质子化合物或水与Lewis酸组成的体系并不是有效的催化体系，不适用于催化芳香族腈进行聚合。

From the top of the tower Galileo dropped a light ball and a heavy ball at exactly the same time.

质子电荷飞域的边界并不象弹子球的表面那样分明。

The stepper ball screw nut has been used in a beam monitor system of Beijing proton synchrotron.

本文阐述的步进滚珠丝杠副已应用于北京质子加速器的束流测量系统中。

This facility is based on the existing HI-13 tandem accelerator. A proton cyclotron will be built to provide 100MeV 200μA proton beam, together with an ISOL system and a super conducting heavy ion LINAC.

该工程在现有串列加速器的基础上，将建立100MeV/200μA的质子回旋加速器、在线同位素分离器和超导加速段。

Till now, by application of PIXE (proton induced X-ray emission) technique, a lot of studies about

质子微探针有很高的空间分辨率和10 6水平的元素浓度检测能力，能够

Objective To analyze 1H MRS features of intracranial lesions with ring-like enhancement, and to evaluate the relation between 1H MRS and pathohistological type.

目的 分析脑内环状强化病变的质子磁共振波谱(1H MRS)特征，评价其结果与病理组织学类型的相关性。

A solar flare on January 20, 2005 released the highest concentration of protons ever directly measured [6] , taking only 15 minutes after observation to reach Earth, indicating a velocity of approximately one-third light speed.

阿太阳耀斑对05年1月二十〇号释放最集中的质子以往任何时候都直接测量[ 6 ] ，同时仅15分钟后，观察到地球，显示出速度的大约三分之一光速。

The main species in rare gas proton cluster is Rg〓H〓, which is proved in the structure calculation of He〓H〓 and Ar〓H〓.

三、惰性气体质子簇中的主结构是Rg〓H〓，这从对He〓H〓与Ar〓H〓的结构计算中就可以得到证明。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。