无环的

The activation energy of epoxy asphalt was lower than that of without asphalt systems.

有沥青的环氧固化体系的反应活化能要小于无沥青的环氧固化体系。

Then, the classifier with multi-class support vector machines of DDAG (decision directed acyclic graph) is given.

然后，用有向无环图的多类支持向量机进行分类。

With the system,one can observe the formation,deformation and breakup of an axisymmetric liquid ring.

这种新的实验设备是由垂直的无膜激波管和液体环发生器所组成，可以用来观察轴对称液体环的形成、变形和破碎过程。

two kinds of ash-less and phosphorous-free compounds, referred to as boma and loma, as lubricating oil additives, were synthesized to replace or partially replace zddp. they were characterized by means of infrared spectroscopy, mass spectroscopy and element analysis.

合成了两种无灰无磷抗磨添加剂：不含三嗪环的含羟基羧酸酯衍生物boma；含羟基的三嗪羧酸酯衍生物loma，分别用元素分析和红外光谱对分子结构进行表征。

In recent papers [14,15] good activity and selectivity in the epoxidation of limonene, cyclohexene, 1-octene and pinene by anhydrous and aqueous H2O2 catalyzed by alumina were reported.

近年来，用氧化铝催化的，用无水的和含水的H2O2将莱烯、环己烯、1－辛烷和蒎烯环氧化中良好的活性和选择性已有报道。

They are soft starter , frequency converter and brushless -ringless converter.

为此，介绍了软启动器、变频器、无刷无环启动器的特点和技术演变过程，以及在城市供水系统中的应用。

Results AE from CM had vasodilating effect on the contracti on of mesentery blood capillary in guinea pigs and the contraction of rat thoracic aortic ring induced by l0μmol/L phenylephrine, even under the condition of pre-treating with glibenclamide (1μmol/L) or propranolol (3μmol/L). When the endothelium of the rat thoracic aortic ring was removed, AE from CM had not vasodilating effect hut constrictive effect. AE from CM could also increase the contents of NO, NOS and cNOS in the aortic tissue and had no obvious effect on the NO content in plasma and iNOS in aortic tissue of rats.

结果 桑白皮丙酮提取物有抑制去甲肾上腺素收缩豚鼠肠系膜微血管的作用，抑制苯肾上腺素(10μmol/L)收缩离体大鼠胸主动脉环的作用，预加优降糖或普蔡洛尔(3μmol／L)后仍然有松弛作用；大鼠胸主动脉环去内皮后药物无松弛作用，反而起收缩作用；显著升高血管的NO和NOS、cNOS含量，对大鼠血浆的NO和血管iNOS的含量影响不大。

This article analyzes the working theory and the working forces of the drive wheel, pyramid wheel and outer ring during the transmission process. It also deduces the practical calculation formula of the pyramid wheel type variable speed drives, it also goes on the material calculation aim at the selection parameter. It protracts the assemble-drawing of the pyramid wheel type variable speed drives and the accessory-drawing of the mostly drive component. So it can express more clearly of the structure and process planning of the variable speed drives.

本文分析了在传动过程中变速器的主动轮、菱锥、和外环的工作原理和受力关系；详细推导了实用的菱锥锥轮式无级变速器设计的计算公式；并针对设计所选择的参数进行了具体的设计计算；绘制了所计算的菱锥锥轮式无级变速器的装配图和主要传动元件的零件图，将此变速器的结构和工艺等方面的要求表达得更为清楚。

When D-glucose is written in an open or vertical, straight-chain fashion, known as an acyclic structure to organic chemists, with the aldehyde group (position 1 ) at the top and the primary hydroxyl group (position 6 ) at the bottom

当D一葡萄糖被写成开环纵向直链的形式，既有机化学中的无环结构，醛基在顶部(1位)，主要的羟基在底部(6位)。

A novel method to prepare Au nanorings by self-reduction of HAuCl4 in the soft template composed of sodium dodecyl sulfate-PEG 20000 cluster at ambient temperature and atmosphere was reported, in which no hard template and extra reducer was needed. TEM image displays that the diameter of Au nanorings is (500±50)nm.

介绍一种由十二烷基硫酸钠与聚乙二醇(PEG 20000)组成的团簇为软模板，在室温、常压、无硬模板及无外加还原剂条件下自还原HAuCl4合成金纳米环的新方法。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐