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Because a bulk smoothing capacitor is usually installed on the DC side of many AC to DC converters, the characteristics of harmonic loads will be influenced by this capacitor. Nowadays, shunt active power filters can't reduce harmonics effectively for this voltage type harmonic-producing load. Therefore, a series active power filter is designed to meet the requirements of voltage-sourced harmonic loads. Both source current and load voltage are detected in order to reach the compensation voltage for the SAPF.

由於许多交直流电源转换器均在直流端并联一直流电容以作为稳压之用,此大电容将造成负载谐波特性的改变;此类谐波源负载,如果使用现今常见的并联型主动式电力滤波器并不能很有效解决此类谐波问题;因此本文将采用串联型主动式电力滤波器,并配合同时量测电源电流及负载电压的混合式控制模式,即可有效解决此类谐波问题。

The tensor quality of energy density function, which contains coordinate vector, is mathematically proofed.

考虑到模型中能量密度函数含有坐标轴方向向量一项,该文对能量密度函数的张量性进行了严格的数学证明,并将VMIB模型初步应用到脆性材料的单轴受压破坏。

The load of material needs 120 kg/m at least that could show the result of filter high contaminants removal capability. It is needed more entering water pressure to compress fiber balls tightly before filtering to produce. The pressure value should be greater than more than 2.5 kgf/cm . The turbidly of yielded water quality can be reduce under 1 NTU while filtering.

滤料的装填量以至少需120 kg/m ,才能发挥过滤截污效果,过滤前需以较大的进水压力先将纤维球压实,压力值要大於2.5 kgf/cm 以上,过滤时的产水水质可达浊度1 NTU以下。

The improved calculation considers the additional torque caused by the different intermesh. The additional torque also leads the transmission torque to reassign.

该方法考虑了工作辊压下量的差异对其传动系统产生附加力矩的影响,使集中驱动式矫直机主传动系统各辊的传动扭矩得到重新分配。

With the planeness better PS and imported the adoption of air-cushion rubber blanket, a printing plate cylinder and rubber roller pressure can be smaller, such as import Heidelberg four color press in 0.05mm to business card printing and membership card.

随着裂缝量较好的PS版和不入口气垫橡皮布的拔取,印版滚筒和橡皮滚筒之间的压辛可更小些,如不入口海德堡四色机在0.05mm即可制卡和会员卡制息。

Cognitive assessments were performed. The main caregiver completed the following questionnaires:(1) Strengths and Difficulties Questionnaire, which rated behavioral symptoms in children;(2) Parenting Stress Index, which determined the quality and magnitude of parenting stress experienced by the caregiver; and (3) Symptom Checklist-90-R, which evaluated the psychopathological symptoms of the caregiver.

我们收集了47位12岁以下病童(均是在新生儿阶段得到CHT诊断并开始治疗)及家长资料,除智力测验外并安排评估工具包括有:(1)SDQ问卷:评估孩子的社会人格/情绪行为特质;(2)亲职压力量表:评估主要照顾者的压力大小及性质;(3)精神症状量表:评估主要照顾者的心理状况。

The fractional anisotropy values of white matter in schizophrenia patients and normal controls were measured respectively in frontal and the splenium of corpus callosum. Independent-samples t-test for non-paired data was used to test the differences between schizophrenia arid controls for FA values. Correlated analysis was applied to reveal the correlations between FA values in frontal and the PANSS scores.

对22例精神分裂症患者和20例健康志愿者进行脑部DTI扫描后,测量双侧额叶和胼胝体压部的各向异性分数值,应用成组t检验对精神分裂症患者和正常健康对照组的相应区城进行比较,并用部分相关性检验对精神分裂症患者脑中各部位相应FA值与PANSS量表评分之间的关系进行统计。

Through adopt the measure such as controling status of hot metal (for example content of carbon, content of oxygen, amount of converter slag, weight of hot metal etc.), depressing degree of vacuum promptly by driving vacuum pump ahead or increasing flow of nitrogen, controling correctly inserted deepness of duck, controling the time of decarburizing, process parameters of decarbonization for managing IF steel using RH—MFB equipment are optimized.

通过严格控制来钢条件,如碳、氧含量,转炉下渣量,钢水量;迅速降低真空室内真空度,采用预真空的压降模式,提高提升气体流量;保证浸渍管插入深度及脱碳时间等措施,优化了攀钢RH—MFB处理超低碳IF钢的脱碳工艺参数,取得了较明显的工艺效果。

If the packing pressed tight, the wear between axle sleeve and packing will beincreased.

因为是从水泵的压水室引水,这样到达填料密封腔的轴封水的压力过高,从而造成填料处轴封水泄漏量过大。

Square dot 5% point targejia, in the four corners phase business card printing and membership card making pressure, 5% point to expand capacity, on the transition from the hiberarchy, 5% point form a fairly obvious dot-jump; circular to about 70% to produce himself, then also imprint-jump, just look at the level of the jump, we need it to be put off; chain-shaped dot is divided into two time point respectively at 25% and 75% of the two places at once, each producing a smaller level.

方不神网不背在5不败不背处四角相搭,在制卡和会员卡制息不张力功用下,5不败不背扩不小量最不小,从条理过渡上看,5不败不背处不神不败一不主较为澄辉的级跳;圆不神网不背给到约70%爆发搭边,这时同样会爆发压印级跳,只是在条理上看,它的级跳处向后提后;链不神网不背不合两不主搭角,不合别在25%和75%两处,各爆发一不主小一些的级跳。

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We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称;三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起,称之为挽歌体诗人或者史诗诗人,他们被称为诗人,似乎只是因为遵守格律写作,而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。

This is not paper type of business,it's people business,with such huge money involved.

这不是纸上谈兵式的交易,这是人与人的业务,而且涉及金额巨大。