查询词典 presence

This is because the presence of a high sand content makes the slurry abrasive.

这主要是因为沙滩中含有大量的泥浆碎石。

The presence of striation area is one of the main characteristic on the surface generated by abrasive jet .

波纹区域的存在是磨料射流切割表面的主要特征之一。

A catalytic amount of Ln(OSO2CF3)3 affected the stereochemistry of-MOPMAM during radical polymerization: the polydispersities of the polymers prepared in the presence of the Lewis acid were broader than those without the Lewis acid and the absolute value of specific rotation decreased in a majority of solvents.

结果表明，在-MOPMAM的聚合反应中，加入稀土盐可观察到明显的效应：在大部分情况下，随着三氟甲磺酸稀土盐加入量的增加，聚合物分子量分布变宽，旋光度也有很大幅度的下降。

He has demonstrated that physical presence becomes involved in the process of painting before anything abstract gradually shapes up.

这恰恰证明了个人在的绘画过程中，首先是身体对于绘画过程的介入，之后才使一切抽象的意识逐渐成型。

It confirms the presence of an accelerant.

这进一步证实了促燃剂的存在

The method leads to acceptably accurate results, despite the presence of other flammable component in the gas mixture.

尽管在该气体混合物中有其它易燃成分，但是该方法产生可接受的精确度的结果。

Tris cyanurate as an excellent additional retardant was synthesized by using cyanuric chloride and 2,4,6-tribromophenol as starting materials in the presence of acid accepter.

本文以三溴苯酚和三聚氯氰为原料，在缚酸剂的存在下，合成了一种性能优良的添加型阻燃剂三三聚氰酸酯。

He made the accusation in the presence of witnesses.

他在有证人在场的情况下提出了控诉。

In the presence of acetic acid and polyethylene glycol, chromic anhydride and acenaphthene react under mild condition and acenaphthene can completely convert into acenaphthenone .

在醋酸、聚乙二醇存在下，铬酸酐和苊在温和的条件下反应，苊可以完全转化为苊酮。

Acenaphthenone was prepared by the oxidation of acenaphthene in the presence of chromic anhydride , acetic acid and polyethylene glycol as a phase transfer catalyst under mild reaction conditions with high yields.

研究了在铬酸酐、冰醋酸和相转移催化剂聚乙二醇存在下苊的氧化反应，较温和的条件可高产率地得到苊酮。

You can snipe the second and third union leaders from this position.

您可以鹬第二和第三工会领袖从这一立场出发。

Aiming at the currently shortage of XML streams quality detecting, this paper proposes a new forecasting method of XML streams quality by least squares support vector machines, which is used the method of XML keys' vector matrix as windows, and vector product wavelet transform to multilevel decompose and refactor the XML streams series, that can fulfill real-time checking demand of XML quality, and ensure constraint, consist- ency and integrality. For even more adapting net load, it proposes a control strategy by weight and adaptive adjustment to ensure XML streams quality.

针对当前XML数据流质量检测存在的不足，提出构建XML键的矢量矩阵作为窗口，利用矢量积小波变换多级分解与重构XML数据流，再结合最小二乘支持向量机对XML数据流质量进行预测的一种方法，满足XML数据流质量重构时实时检测的要求，保证XML数据的约束性、一致性与完整性；为了更好的适应网络负载，采取加权与自适应窗口调整等调度策略充分保证XML数据流的质量检测。