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To get more insight into the mechanism and kinetics of the RAFT process,it would be helpful to build a small molecular model reaction mimicking the RAFT process but free of a chain-propagation event. We hereby propose a model cross reaction between dithioester and alkoxyamine as a probe of the RAFT process,in which the alkoxyamine plays the role of the radical source.The generating rate of the transient alkyl radical and the nitroxyl radical can be described by the law of persistent radical effect.Thus,the advantage of the model cross reaction is that it affords a radical concentration determined by the known equation of the persistent radical effect.

为了更深入的理解RAFT聚合过程，我们构建了一个模型反应：即由烷氧基胺与双硫酯进行交换反应，烷氧基胺均裂产生的烷基自由基将会向双硫酯进行链转移，双硫酯的引入对纯烷氧基胺分解动力学造成的影响可以提供RAFT过程的许多信息。

By means of the preprocessing technique, the well known space smoothing method and MODE method which can only be used to ULA can then be applied to VULA to estimate DOA's of coherent sources.

盲估计算法是在整个模型空间内寻找与相干信源对应的广义方向向量，然后再由广义方向向量估计各个相干信源的方向。

Among the more celebrated "deserts" should be mentioned those of San Juan Bautista, founded in 1606 at Santa Fé, New Mexico; Bussaco (1628), near Coimbra, Portugal, now a horticultural establishment and recreation ground; Massa (1682), near Sorrento, Italy, well known to visitors to Naples on account of the marvellous view of the gulfs of Naples and Salerno to be obtained from the terrace of the convent; and Tarasteix (1859), near Lourdes, France, founded by Father Hermann Cohen.

其中较著名的&沙漠&，应该提到的那些圣胡安包蒂斯塔，成立於1606年，在圣菲，新墨西哥； bussaco （ 1628 ），近Coimbra ，葡萄牙，现在是一家园艺建立和游乐场；马萨（ 1682 ），近Sorrento ，意大利，众所周知，以游客那不勒斯就交代了绝妙的观海湾，那不勒斯和萨勒诺，以获得从阳台的修道院； tarasteix （ 1859 ），近Lourdes ，法国，成立由父亲赫尔曼科恩。

Among the more celebrated "deserts" should be mentioned those of San Juan Bautista, founded in 1606 at Santa Fé, New Mexico; Bussaco (1628), near Coimbra, Portugal, now a horticultural establishment and recreation ground; Massa (1682), near Sorrento, Italy, well known to visitors to Naples on account of the marvellous view of the gulfs of Naples and Salerno to be obtained from the terrace of the convent; and Tarasteix (1859), near Lourdes, France, founded by Father Hermann Cohen.

其中较著名的&沙漠&，应该提到的那些圣胡安包蒂斯塔，成立于1606年，在圣菲，新墨西哥； bussaco （ 1628 ），近Coimbra ，葡萄牙，现在是一家园艺建立和游乐场；马萨（ 1682 ），近Sorrento ，意大利，众所周知，以游客那不勒斯就交代了绝妙的观海湾，那不勒斯和萨勒诺，以获得从阳台的修道院； tarasteix （ 1859 ），近Lourdes ，法国，成立由父亲赫尔曼科恩。

Once thought to be static, the adult brain is now known to be the opposite ?

曾经认为是静止的，现在都知道**的大脑是活动的？

And these may be reduced to three principal or primary articles; the right of personal security, the right of personal liberty, and the right of private property: Because as there is no other known method of compulsion, or of abridging man's natural free will, but by an infringement or diminution of one or other of these important rights, the preservation of these, inviolate, may justly be said to include the preservation of our civil immunities in their largest and most extensive sense.

这些权利可以简化为主要或初始的三条；人身保障权利，人身自由权利，以及私有财产权利：因为除了侵犯或缩减这人或那人的这些重要权利之外，不知道还有什么方式可以强迫或缩减一个人的自然的自由意志，保护这些权利免于被侵犯，可以说便包括了在最大和最广泛的意义上对我们的世俗豁免权利的保护。

The problem with security mechanisms is balancing protection against user convenience. User complaints about Windows Vista\'\'s seemingly omnipresent UAC dialog box illustrate the frustrations that in-your-face security can present. In an attempt to enhance security without unduly inconveniencing users, Microsoft included a pre-approved list of controls that aren\'\'t automatically disabled by the Active X opt-in feature. These are commonly used controls that are known to be safe. Users won\'\'t be prompted before running those controls.

安全机制的问题是使防护与用户方便保持平衡用户抱怨Windows Vista看中去无处不在的用户帐户控制(User Account Control，UAC)会话框演绎着安全可出现的掉败为增强安全而又不过度地使用户感应坚苦，微软包含了一个预许列表，表中的控件不会被 Active X选择性插手特征自己主动克制这些个是已经知安全的经常使用控件在运行这些个控件前用户不会被提示

To what degree can the message be restricted to those people who are known to be the most logical prospects?

对于那些最有理性的可能人群，这些广告信息被限制在哪个最大限度呢？

A truth is to be known always, to be uttered sometimes.

真理是常久被人知道的，有时被人说出的。

The Dartmouth College Case, as it has come to be known, is considered to be one of the most important and formative documents in United States constitutional history, strengthening the contract clause of the Constitution and thereby paving the way for all American private institutions to conduct their affairs in accordance with their charters and without interference from the state.

达特茅斯学院的案例，因为它已成为众所周知，被认为是一个最重要的，并形成文件，在美国宪政史上，加强合同条款的宪法，从而铺平了道路为所有美国私营机构进行他们的事务按照其章程和不受干涉的国家。

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％。