多级的

The impurities generating mechanism is explored and corresponding technical plan is provided for determining and diminishing the impurities including diphenyl methane, triphenylmethane, triphenylcarbinol, 4-methy benzophenone, 4-chloro benzophenone and etc. in order to produce high purity benzophenone.

利用化学技术、循环经济和产业生态学原理结合本生产工艺过程的特点确立包括碳循环、苯循环、工艺水循环、氯的回收循环等闭合循环技术组合，设计了光气即产即用技术、倾析分离技术、能量多级利用技术、蒸发—冷凝联用和多热源组合集成技术、二苯甲酮纯化技术等实用方案，实现经济地生产清洁的高纯度产品和生产过程废物零排放。

First,wavelet transform decomposes the original image,then the coefficients of the three directions are used to construct the band-cross vector,and then the vectors are classified.In addition,new vector quantization technologies are used in this algorithm.

该算法在对图像进行多级小波变换后，构造三个方向的跨频带矢量，同时采用分类矢量量化，非线性插补矢量量化和基于人眼视觉特性的加权矢量量化，提高了图像的编码效率和重构质量。

The PNDC was not built, but work on it led Pomerene to the idea of making a highly available memory system out of a number of memory units, each storing one bit position of a word.

PNDC虽然只停留在设计阶段，没有实际建造，但它的一些思想，如包含高速缓冲存储器在内的多级存储器系统等，在以后的系统中获得了发展和使用。

Finally Jizhong Oil field in North China block and amylin Erlian South-Mao state block multi-level bridge precision drilling fluid plugging the recipe and an evaluation of drilling fluid system.

最终得到华北冀中油田的二连区块和淀南-鄚州区块的多级架桥精确暂堵钻井液体系的配方，并对该钻井液体系进行评价。

Intra-group analysis and inter-group analysis were performed. The results show that there are remarkable deficits on different levels of visual cortex in anisometropic amblyopia predominantly in the extrastriate cortex rather than the striate cortex.

结果表明，屈光参差性弱视的静息视觉网络中，多级视觉皮层均发生了明显的功能损害，其功能连接度的范围与强度显著低于正常组，而且，高级别纹外皮层比低级别纹状皮层损害更加明显。

In order to promote the performance of AOF system, two algorithms on how to efficiently design the window, one of which is based on LMS principle and the other is bifurcating of rectangle window which treats the system window as being formed from the convolution of two lower-ordered rectangle window on the left and right branch of the dichotomic tree and therewith forms multilevel decomposition via recursion, are put forward.

为提高系统的功能，提出&基于LMS准则&和&基于矩形二叉分解&的窗函数设计算法，其中二叉分解算法将系统窗看作由二叉树中左右分支的低阶矩形窗卷积形成，并依据回归定义形成多级分解。

A multilevel paravertebral block provides good analgesia for breast surgery, but the duration of analgesia is briefer than described in previous studies.

多级脊柱周围阻断能为乳腺手术提供良好的阵痛效果，但是持续的时间要比之前的报告短暂。

Six-stage counter-current extraction experiments were carried with two different solvent to raffinate ratio i.e. E/R=4, 8. A better result was found with E/R=4, that gave 90% in oil recovery and 8~9% oil concentration in extract.

本研究建立多级逆向萃取的数学模式，并分别以两种溶剂与固体比(E/R=4，8)进行实验，验证数学模式的实验结果显示E/R=4效果较佳，六级的逆向萃取，萃取收率达90%且萃取液浓度可维持8~9%。

Point out among multistage amplifier reducing total noise directioning of coefficient , design one low in noise to setover the circuit, there is certain reference value to the design of the circuit amplifier.

指出在多级放大器中降低总噪声系数的方向，设计出了一种低噪声偏置电路，对电路放大器的设计有一定的参考价值。

Point out among multistage amplifier reducing total noise directioning of coefficient , design one low in noise to setover the circuit, there is certain reference value to the design of the circuit amplifier.

指出在多级放大器中降低总噪声系数的方向，设计出了一种低噪声偏置电路，对电路放大器的设计有一定的参考价值。关键词：电子噪声，电路噪声，噪声计算

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％。