查询词典 hum reduction factor

The catalytic enantioselective reduction of ketones has been extensively studied with a great success during the last decade.

十几年来，人们对酮类的不对称还原开展了广泛的研究，并取得了很大的进展。

The advances in asymmetric reduction of prochiral ketones to chiral alcohol s with biocatalysis are reviewed.

综述了国内外利用生物催化羰基的不对称还原合成手性醇的研究情况。

A new process for seamless tube production called Seamless Tube Process comes into our horizon. The key equipment is a four—roll planetary rolling mill, which is also called Kocks Reduction Mill. The structure and operation principle of four-roll planetary rolling mill is similar to the three-roll planetary rolling mill.

最近出现了一种新的轧管工艺——STP轧管工艺，其核心设备为四辊行星轧机，又称KRM轧管机，其结构和工作原理与三辊行星轧机类似。

The high bandwidth and large number of sub-carriers used for DVB-T and DVB-H allow for the reduction of several kilohertz of spectrum around DC without noticeably degrading performance.

高宽带和大量子载波频率的使用，使 DVB-T 和 DVB-H 在直流电中允许数千赫兹的缩减，而没有显著的不良表现。

The first Chinese atomic device, which had been tested the month before on October 16, had a yield of 22 kilotons and weighed 1,550 kg, far too heavy for the DF-2A (when the 200 kg reentry vehicle aeroshell had been added). On December 13, the Defense Science and Technology Commission, which oversaw both the missile and nuclear bomb programs, demanded the reduction of the weight and size of the first operational atomic bomb in order to fit it on the DF-2 A.

中国人的首个核装置于一个月前，即10月16日进行了爆炸试验，2.2万吨的当量，重1，550公斤，远远超过东风2A的负载能力（考虑到还要加上200公斤的再入段弹头载具）。10月13日，负责监督导弹与核弹两个项目的国防科工委要求减少首个作战用核弹的重量和尺寸以便使其能够装入到东风2A上。1965年11月，两弹合一的导弹成功进行了飞行试验，但核弹头此时仍未完成改进。

TP and EGCG can protect liver against necrosis and inflammation induced by alcohol, and the mechanism may involve its effect on the reduction of plasma endotoxia, and inhibition of Kupffer cell activity and proinflammatory cytokine expression and secretion.

茶多酚及EGCG可减轻酒精性肝损伤大鼠肝脏的炎症与坏死，其可能机制包括降低内毒素血症，抑制Kupffer细胞活性与促炎细胞因子的表达与分泌。

It appears she now has a three inch reduction, from 24 inches I think I was surprised but very pleased after she tightened my lacings she instructed me to stay in my house coat instead of getting dressed, and she returned a few minutes later and again tightened them.

貌似她的腰围已经从24寸减小了3寸了母亲为我束紧束带后没让我换衣服而是让我继续穿着家常服，我觉得奇怪不过也很高兴，但是几分钟后她又回来继续束紧了束带。

In chapter I, We study that the catalysis of Al~(3+) on the reduction of Cr~(6+) by citrate acid, tartaric acid, oxalate acid, butyric acid, laetrile acid and malic acid at different temperatures and pH.

本论文共分三部分：第一部分：在不同的温度和pH条件下，通过批式试验研究了Al~(3+)对柠檬酸、酒石酸、草酸、正丁酸、苦杏仁酸、苹果酸还原Cr~(6+)的催化作用。

［Objective］To discuss the method and clinical effects of coronal fractures of the femoral condyle treated with open reduction plus cancellous lag screw internal fixation.

［目的］探讨切开复位、松质骨拉力螺钉内固定治疗股骨髁冠状面骨折的方法及临床疗效。

In most markets a reduction in land supply and apartments would lead to higher prices, but that has not happened in Shanghai.

在大多数市场上，土地和房屋供给的减少，将导致房价上涨，但上海还没有发生类似情况。

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。