查询词典 a mass of

A car of mass m is slipping down a slope of inclination angle at a constant acceleration a.

一质量为m的小车从斜度为的斜坡以匀加速度a滑落下来。

A The English-speaking and Anglicized Singaporeans are mainly come from or converted from all races, they represent the degree of the replacement of languages of all races by English (this is a phenomenon of cross-racial mass Anglicization).

a 讲英语及英语化的群体主要来自或转化自各族，他们代表了各族语言被英语取代的程度（这是一种跨种族集体被英语化的现象）。

What is represented by the symbol AZX is an atomic species called a nuclide of the element X, having an atomic number Z and a mass number A.

符号AZX代表的是元素X的一种核素，其原子序数是Z，质量数为A。

If you routinely newsprint on cards and membership cards to make hanging mesh image, the picture will not be further jingmel, becomes a mass of cataplasm, therefore, to see before you take a look at the output of your business card printing and membership card making products of this business card printing and membership card making what is a piece of paper and then decide on the precision of the net.

如果你在一般的新闻纸上制卡和会员卡制作挂网目高的图片，那么，该图片不但不会变得更精美，反而会变得一团糊，所以，输出前必须了解一下你制卡和会员卡制作品的制卡和会员卡制作用纸是什么，再决定挂网的精度。

An aerosol spray device which is capable of imparting a unipolar charge by double layer charging and charge separation to liquid droplets of a composition sprayed therefrom has a spraying head in the form of an insert in an actuator, the spraying head having a bore through which liquid is expelled having an outlet, preferably with a tortuous periphery, having an L/a ratio of at least 8 (preferably at least 10) where L is the length of the periphery defining the bore outlet in mm and a is the cross-sectional area of the bore outlet in mm2 and the apparatus being constructed such that the droplets are expelled from the spraying head at a flow ratio of at least 0.4 (preferably at least 0.5) grams per second and have a charge to mass ratio of at least +/-1x10-4 C/kg.

本发明还提供了一种喷射装置，它能够通过双层充电和电荷分离而向要喷出的组合物液滴施加单一极性的电荷，该喷射装置具有一个喷头，该喷头制成为致动器中的插入件的形式，喷头具有一个孔腔，液体能够通过该孔腔从装置中排出，该孔腔具有一出口，该出口最好具有曲线周边，并且L/a比率至少为8，其中L是以mm为单位的确定孔腔出口的周长，a是以mm2为单位的孔腔出口的横截面积，该装置构造成使得液滴在至少每秒0.5克的流动速率以及具有至少＋／－1×100C/kg的电荷／质量比的状态下从喷头排出。

A plural noun in the of -phrase requires a plural verb; a singular or a mass noun in the of -phraseis to be followed by a singular verb.

"分数/百分数+of+名词"作主语时，如果 of 后面的名词是单数，谓语动词用单数；如果 of 后面的名词是复数，则动词也用复数。

Reinhard Genzel obtained compelling evidence for this conjecture by developing state-of-the-art astronomical instruments and carrying out a persistent programme of observing our Galactic Centre for many years, which ultimately led to the discovery of a black hole with a mass a few million times that of the Sun, in the centre of the Milky Way.

莱因哈德E根舍对这个挑战性的猜测，找到了证据。他发展了最先进的天文设备，并持之以琣a对银河系中心进行长达数年的观测，终於笫一个获得确切证据，发现在银河系中心有一个黑洞，其质量是太阳质量的数百万倍。

We have synthesized a series of 4,4′ perfluoro-alkylated bipyridine ligands[4,4′- bis(RfCH2OCH2)-2,2′-bipyridine , Rf=HC4F8(1a), HC8F16(1b), C3F7(1c) and C10F21 (1d)] by nucleophilic substitution reactions. The reaction of fluorinated alkoxide on 4,4′-bis-2,2′-bipyridine results in the systheses of these four fluorinated ligands. These reactions are high yieldings and purification is easy. The structures are analyzed by GC-MASS、NMR、FT-IR etc.

中文摘要我们已合成出一系列在联吡啶的4，4′位置有两个氟化烷基侧链的联吡啶配位基[4，4′-bis(RfCH2OCH2)-2，2′-bipyridine ， Rf=HC4F8(1a)， HC8F16(1b)， C3F7(1c)及C10F21(1d)]，经由亲核取代反应，由4，4′-bis-2，2′-bipyridine反应而得，并具有不错的产率，其纯化也简易可行，所合成之产物并可用GC-MASS、NMR、FT-IR鉴定其化学结构。

Since the atoms that make up normal,"solid" matter are mostly empty space, a star made almost entirely of tightly packed neutrons is extraordinarily dense: a fingernail's worth of a neutron star would have a mass of more than a trillion kilograms. A neutron star's density and gravity is second only to a black hole.

确切的说，是直径20km左右的一个超级中子，虽然不过只有一个大中型城市的体积，质量超过1.5倍太阳——译注）由原子组成的普通物质，其&实心&的物质内部其实绝大部分都是空的（大家完全可以用太阳系质量集中在太阳来想象原子内部，当然电子与行星有本质区别——译注），而一颗几乎全部由中子构成的恒星却密度极大：指甲大的一块中子星物质的质量达到万亿吨级，中子星的密度、引力仅次于黑洞。

But suddenly, as we struggled round a bend,there would be a glimpse of rush walls, of peaked grass roofs, a burst of yells, a whirl of black limbs, a mass of hands clapping, of feet stamping, of bodies swaying, of eyes rolling, under the droop of heavy and motionless foliage.

然而，当我们奋力转过河弯时，会突然瞥见那静静垂着的浓荫下拥挤的墙垛，尖尖的草屋顶，许多黑色的肢体在旋转，许多眼睛在骨碌碌转，还会听到爆发出的呼喊声，许多手的拍击声，许多脚的跺地声。

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。