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Cascades were calculated for various key relative molecular mass,which is the average relative molecular mass of two key components in a matched abundance ratio cascade.

在匹配丰度级联中，关键相对分子质量是两个关键组分相对分子质量的平均值。

Electrospray ionization mass spectrometry combined with multipletandem mass spectrometry has been applied for simultaneously determininglipo-alkaloids from the aconite tubers.

把电喷雾质谱和多级串联质谱(〓，n=2-10)结合用以分析附子中脂类生物碱的成分。

Headquartered in Acton, Mass., Propagate has offices in China and Mass. and is privately funded.

普波网络总部设在Acton Mass。，在中国大陆和Mass拥有研发中心。

In his opinion: freedom in modern society is a kind of inter-control relationship between human and objects, that is an illusion of freedom; personality is the outcome of the batch production of consumer system; it is a kind of self-shoot, a shadowy self-comfort and satisfaction; the aesthetic distance formed the lonely state of modern human, this makes favor and identity be important motivity of consumption; nature here has been changed to naturety, it is a consumable symbol opposes to real nature; art and artworks gradually turns into sign; as the container and carrier of spirit, body has been changed to a separate object, a kind of capital that needs to be managed and operated; the inimitably expansion of image in mass media make human immerse in the aspiration of itself, which makes human fowardly go into the matrix of consumption.Abundant objects and information are accumulated in supermarkets and mass media, which give people an image of rich. At the same time, commodity appears in series to rise people's desire. The difference between kinds of commodity has gradually been erased, replacing the utility as object.

他认为：当代的自由实际上是人与物的相互操控关系，是人的自由幻觉；个性是消费系统中批量生产的产物，是一种自恋性的投射，一种虚幻的自我安慰和满足；审美距离则造成了当代人的孤独，这使得关切和身份认同成为消费的重要动力；自然已经变成自然性，成为对立于真正自然的可消费的文化符号；文艺复兴以来的艺术和艺术品逐渐由模仿转为表现再转为符号。

Secondly, the dissertation takes out the commonly rule of urban mass transit passenger liner base on the study of the typical rule of urban mass transit passenger liner all over the world. It also can be a new check method for forecast, even a aidant forcast method of urban metro transit.

2在研究国内外典型轨道交通线路客流发展趋势的基础上，得出城市轨道交通客流变化的一般规律，可为进行客流预测的交通工作者提供一种新的验核方法，甚至作为一种辅助客流预测的手段。

And in the heat and mass transfer process, the mass will be transferred from the water film to the air all the time, while the heat transfer direction is likely to be changed.

研究发现，随着饱和器内工作压力的增大，饱和器出口空气更容易达到饱和，但空气的绝对湿度降低了；并且在整个传热传质过程中，质量一直从水膜传向空气主体，而热量的传递方向则有可能发生改变。

In the cold and warm air mass itself, although there are different temperatures, but is relatively small, and temperature difference between cold and warm air mass is very great.

在冷暖气团内部，虽然温度也有差异，但相对来说是很小的，而冷暖气团之间的温差却非常大。

Over the years these festivals combined, the mass held on All Saints' Day was called Allhallowmas (the mass of all Hallows - saintly people).

美国和加拿大的孩子们在这天穿戴上古怪的服饰去按邻居家的门铃，并按传统发出"是款待我还是要我耍花招"的威胁。

Over the years these festivals combined, the mass held on All Saints' Day was called Allhallowmas (the mass of all Hallows -- saintly people).

邻居们不管是否被吓著，总是准备了一些糖果、苹果等点心，孩子们则一一收入自己的袋内。

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。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

The article combines with the treatment of a superficial civil air defense work to introduce how the grouting method to improve the performance of the backfill soil.

文章从治理漂浮人防工事的角度提出了注浆技术在改善回填土性质方面的应用，并详细阐述了注浆技术的施工流程。