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Alpha particle s have two positive charges and a mass of four atomic mass units; they are identical to helium nuclei.

因为α粒子有两个正电荷，质量为4，射出后产生的子核的正核电荷和原子序数都比母核小两单位，质量小四单位。

Alpha particles have two positive charges and a mass of four atomic mass units; they are identical to helium nuclei.

因为α粒子有两个正电荷，质量为4，射出后产生的子核的正核电荷和原子序数都比母核小两单位，质量小四单位。

Influenced by these thoughts, a group of litterateurs like WangYangming, LiMengyang, Kanghai, WangShizhen, WangDaokun, Tulong, LiWeizhen, YuanHongdao, YuanZhongdao, Zhongxing etc, composed a mass of inscriptions on tombstone and biographies. In honor of the son of businessmen like YanPeiwei, clothier YangNianru, broker Shenyang, the famous essay "Gravestones of Five People " was written by Zhangfu.

在这种思想的影响下，王阳明、李梦阳、康海、王世贞、汪道昆、屠隆、李维桢、袁宏道、袁中道、钟惺等一批文士为商贾撰写了大量的墓志铭及传记，而张溥的散文名篇《五人墓碑记》Gravestones of Five People就是为商人之子颜佩韦、估衣商杨念如、经纪人沈扬等所作。

Atomic bomb: In fission weapons, a mass of fissile material is rapidly assembled into a critical mass, in which a chain reaction begins and grows exponentially, releasing tremendous amounts of energy.

原子弹：裂变武器大规模的裂变材料正在迅速集结成一个临界质量，其中连锁成倍增长，并开始，数额巨大能量释放出来。

I watched, horrified, as a mass of gorgeously nutty, aged Gouda seized and curdled into a stringy, unappetizing mass.

但结果令我感到震惊，因为一团精美的坚硬的古达干酪凝固成卷须状的倒胃口的块状物。

This thesis makes a detailed research into the Universal Serial Bus Mass Storage Class Specification and its relevant protocols, and builds up a set of protocol stack under the embedded Linux environment of the StrongARM processor development platform according to this specification, with which the hand-held device can communicate with the PC system easily.

本文详细分析了USB海量存储设备类规范(Universal Serial Bus Mass Storage Class Specification)及其相关协议，并在StrongARM处理器开发平台的嵌入式Linux环境下设计了一套基于此规范的嵌入式协议栈，使掌上设备可以很方便地通过USB与PC系统进行数据通讯。

Gradually, the separate sine waves have become visible. The dominant signal, corresponding to a planet with about the same mass as Jupiter but which orbits 55 Cancri A more closely than Mercury orbits the sun, was detected in 1996. Two further sine waves emerged in 2002, corresponding to one planet that has the mass of Saturn and is also orbiting more closely than Mercury, and another with four times the mass of Jupiter that is located in what would be Jupiter's orbit.

逐渐地，&正弦波&曲线出现明显的分离。1996年，科学家探测到了起支配作用的讯号，这种讯号表明发出讯号的行星与木星有着相同的质量，但它围绕恒星&55 Cancri A&运行的距离比水星围绕太阳运行的距离还要小。2002年，另外两个&正弦波&曲线被发现，它们也分别代表两颗行星：一个行星有着土星的质量，围绕恒星的距离也比水星围绕太阳的距离要小；另一个行星有着木星质量的四倍，其位置将会预计在木星的运行轨迹上。

In this study, isobaric tags for relative and absolute quantification labeling coupled with two-dimensional liquid chromatography-tandem mass spectrometry (2D-LC-MS/MS) was employed to compare the differential protein expressions in MCF7 cells upon 17β-oestradiol (E2) stimulation or serum deprivation versus in normal conditions. A total of 576 proteins with the confidential level of ≥95% were identified, 26 proteins among the 576 proteins were found to be differentially expressed after E2 stimulation or serum deprivation, and among them 10 proteins were up-regulated and 16 proteins were down-regulated by more than two folds.

利用四重用于相对和绝对定量的等量异位标签(isobaric tags for relative and absolute quantification， iTRAQ)标记结合二维液相色谱-串联质谱(two-dimensional liquid chromatography-tandem mass spectrometry， 2D-LC-MS/MS)对雌二醇(17β-oestradiol， E2)和血清各自以及共同作用对MCF7乳腺癌细胞内蛋白质表达的影响进行了比较，共鉴定到置信度在95%以上的蛋白质576种，其中各组相对于正常培养组的细胞共找到26种差异在1倍以上的蛋白质，其中10种上调，16种下调。

Adopting a mass of 5.9M⊙ for the B star, we derive a mass of ~(3.6±0.7)M⊙ for the F star.

我们的数据支持：伴星质量约5.9个太阳，主星质量约3.6±0.7个太阳。

The orbital elements imply that the opaque object has roughly the same mass as the visible component, which for much of the last century was thought to be an F-type supergiant star with a mass of ~15M⊙(M⊙, mass of the Sun).

根据轨道根数，一般近似地认为不透明伴星与明亮的主星质量相当，而上世纪主流的观点认为主星是15个太阳质量左右的F型超巨星。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。