查询词典 multilevel

A two-cell single-phase hybrid cascade asymmetrical multilevel converter is researched in the thesis based on AMC-AMC.

组合式不对称混合级联型多电平变换器拓扑的生成方法可以分为两种；同构组合以及异构组合结构。

Multilevel converter ; cascade ; topology ; module

多电平变换器；级联型；拓扑；模块

A novel hybrid diode-clamp cascade multilevel converter is presented in this paper. The new concept of the converter is based on connection of multiple diode-clamp converter modules with different dc bus voltages. Normally, the voltage blocking capability of faster devices such as IGBT and the switching speed of high voltage devices like GTO are found to be limited.

该文在研究传统的级联多电平、传统混合级联多电平以及二级管钳位级联多电平变换器的基础上提出了一种新型的混合二极管钳位级联多电平变换器，这种新型变换器是将具有不同直流母线电压的多个二极管钳位多电平变换器进行级联，输出电压是将这些变换器的输出电压进行矢量相加而合成的。

To provide personalized commodity recommendation, this paper presents a new recommendation mechanism based on multilevel customer model, which consists of data preprocessing, model learning, recommendation set generating, and intelligent filtering.

该机制借助于多级客户模型从客户的购物需求、偏爱特征和消费能力三方面捕获客户的实际需求，从而实现了一种深层次的个性化推荐，改善了推荐效果。

Especially in direct-driven wind power generation system, it requires the full power converter, so it must pay more attention on multilevel converte.

尤其是对于直接驱动型风力发电系统，需使用全功率变流器，研究多电平变流器有一定的现实意义。

Second, considering the influence of well resistance, smear effect and structure breakage of thick soft clay, the equivalent calculation method is proposed. That is, the partially penetrating sand drain ground is viewed as the double-layered ground, and its consolidation is analyzed with 1-D consolidation theory, through the transformation from 3-D consolidation to 1-D consolidation in the region of sand drain. This can overcome the disadvantage that the excess pore water is discontinuous between the region of sand drain and under-lying soft layer. To the double-layered ground, based on the consolidation mechanism under surcharge, the excess pore water pressure calculation formula is deduced under the condition of multilevel equably loading or unloading, which perfects the consolidation theory.

然后，在充分考虑竖井区井阻、涂抹作用以及土体结构损伤破坏对固结影响的基础上，将未打穿竖井地基合理地转化为双层地基，按一维固结理论计算，克服了传统固结计算方法在竖井处理区与下卧层交界面处存在孔压间断的缺点；在此基础上，从超载预压法的基本原理出发，分析了双层地基超载预压固结、沉降机理，推导了多级等速加、卸载情况下双层地基的固结计算公式，进一步完善了双层地基固结理论。

Bartenders within the multilevel club were juggling Champagne bottles topped with sparklers while revelers lounged on white banquettes, drinking Chivas Regal and green tea.

这家有好几层楼的夜店里的酒保耍弄著套著仙女棒的香槟酒瓶，狂欢者斜靠在白色的长沙发上，喝著芝华士威士忌和绿茶。

For the particular structure of water-lubricated plastic alloy bearings,with cannelures and low elastic modulus of plastic alloy bushes,and for the complicated numerical calculation of elastohydrodynamic lubrication,the multilevel method was introduced into the EHL numerical calculation of water-lubricated plastic alloy bearings,and the numerical results were attained successfully.

由于水润滑塑料合金轴承的特殊性：带有纵向的沟槽和轴承衬弹性模量低，以及弹流润滑的计算比较复杂，将多重网格法引入到水润滑塑料合金轴承的弹流润滑计算之中，成功地实现了数值解，为其理论研究奠定了基础。

Though the Waddington and von Bertalanffy programs have not been confirmed in the typical accomplishments and representations in molecular biology in general, and molecular genetics in particular, there are interesting advances that fall between those searches for broad theories couched in mathematically precise differential equation form, and the narrow classes of mechanisms, usually described in qualitative multilevel causal language, that constitute the vast majority of current biomedical explainers.

朋友，追加点分如何？虽然Waddington和冯Bertalanffy节目在分子生物学和分子遗传学的典型的成就和表示法未一般来说，被证实特别是，有下跌在那些查寻之间以数学上精确微分方程形式横卧的宽广的理论的有趣的前进和在定性多重原因语言，通常描述的机制狭窄的类，构成绝大多数的当前生物医学的解说员。

Despite this, there is still reluctance among spine surgeons to perform multilevel fusions for adult degenerative disc disease.

进行了融合节段前方结构性植骨和后路适当的内固定植入后取得了较好的融合率。

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％。