无键的

Fischer's Ariadne musica is cycle of keyboard music which consists of pairs of preludes and fugues; the preludes are quite varied and do not conform to any particular model.

1746是第一批把17世纪后期的法式古键琴音乐带到德国的作曲家，把法式的序曲改为无调性的前奏曲。

Then the experiment of the thickness and deviation dependent shows the continue networks model is more seemlier, in which the amorphous lattice is the same of a single crystal, but its bond distance and bond angle have a little change.

而我们的池厚与分散度关系的实验已说明了厚池中键长键角不归一，当小球标准差为8.4％时，键长键角的变化可以用连续网络的非晶模型来描述，此模型的非晶结构的骨架与单晶相同，但键长键角有小量的无规性。

You may think of some voice enabled typing capability for replacement but other than this, there is an innovative solution known as orbiTouch keyless keyboard created by Keybowl.

你可能会认为一些声音，使打字的能力，更换，但其他比这个，有一个创新的解决方案称为orbitouch无键键盘所造成的

Phosphorylated chitosan (phosphorylate-modified chitosan,P-CTS) was synthesized by the reaction of monosodium orthophosphate with urea in the presence of HAc.

壳聚糖(chitosan，CTS)是由β(1~4)键合的D-葡糖胺残基和数目不同排列无规的N-乙酰基葡糖胺残基组成的线性多糖，是生物界中大量存在的唯一的一种碱性多糖。

The top visible surface of the keys should be unpolished.

键顶的可视表面应该是无光泽的。

By default, snapping distance is set to a window caption bar height, and no-snap key is Shift key.

默认情况下，断裂的距离设置为一个窗口的标题栏的高度，无管理的关键是Shift键。

In this thesis, investigations focused on heteropoly acids-catalyzed C-C and C-N bond formation reactions and the synthesis of xanthenediones and acridinediones under thermal conditions are described.1.12-Phosphotungstic acid has been used as an efficient,eco-friendly,and air- and moisture-stable catalyst to promote the direct dehydrative substitution of the hydroxy group of benzylic and allylic alcohols with variousβ-dicarbonyl compounds.

本篇论文主要描述了杂多酸催化下的C-C和C-N键的生成，以及无溶剂直接加热下合成十氢氧杂蒽二酮和9-芳基十氢吖啶二酮。主要内容如下：1。在磷钨酸催化下，1，3-二羰基化合物与醇能够顺利偶合，脱除一分子的水，生成烷基化的1，3-二羰基化合物。反应在甲苯中进行时，二芳基甲醇能与各类1，3-二羰基化合物反应，成率很高；但对于1-苯乙醇，只能得到很低的产率。

The active form of NGF is a dimer in which two monomer is linked by 3 disulphide bonds. This form of dimer makes the purification of NGF difficulty because the protein expressed in E.

在蛋白纯化过程中这种由二硫键形成的空间结构往往是蛋白纯化过程中复性的难点，尤其是在大肠杆菌表达生物蛋白时，所表达的蛋白往往以无活性的单体形式存在于细胞内。

A detailed analysis of the experimental results implied that the attractive forces play a main role in the collisional quenching processes of NCO by the quenchers studied in this work, and for some quenchers, the quenching of NCO is probably controlled by the entrance-channel and might be ascribed to the contribution of chemical reactions.

这一加成过程是一个入口势能面属于纯吸引型的无垒过程，故是NCO+O反应的主要通道。二是O原子攻击NCO分子的O原子得到中间物tran-NCOO，再通过C-O键的断裂生成产物CN+OO。该产物通道由于是吸热的，故很难发生。

Through visible wavelength and the UV spectrum analysis, the transmittance is found declined as the mass transport and the cosolvent concentration increases and the cut-off wavelength tends to shift to long wavelength.The FTIR spectrum analysis shows that tin dioxide particulates and PMMA has no obvious surface bonding. Therefore, no new absorption peak is found and so do the change shown on the wave shape.

经由可见光及紫外光穿透光谱分析，发现其穿透率随质传温度及氯化锡/甲醇潜溶剂浓度增加而下降，且截止波长有往长波长移动的现象；经红外光光谱分析，析出的二氧化锡颗粒与PMMA并没有明显的界面键结，故并无新的吸收峰出现，波形改变不明显。

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％。