查询词典 turn ratio

A novel layout of IC transformer is proposed to achieve both high turn ratio and coupling coefficient in this paper. In order to discuss the coupling coefficient, the layouts are designed with different turn ratio. The thesis is mainly includes of three experiment topics. The multi-stack structure is proposed to achieve prior goal in first topic. Two groups of proposed devices are designed to maintain identical self- inductances in transformer's primary and secondary coils. Total six devices are fabricated in foundry 90-nm CMOS technology. Using the 9 and 5 metal layers in primary and secondary coils in a specific layout, measurement results show that the transformer has the largest benefit using the bottommost return layer in layout design. In one word, the adoption of more metal layers to construct different turn ratio transformer shows not only improving the N value but also saving the chip area in this experiment.

中文摘要本文是针对不同圈数比变压器探讨其耦合量的变化，并且期望其变压器能同时达到高圈数比及高耦合系数的特性，本论文主要可分为三个实验主题，首先第一个主题提出以90nm CMOS制程技术实现的多层金属层的布局方式，并以相同的一、二次侧自感值分为两组，利用不同返回层来达到不同的圈数比，且从量测结果可以得知，在变压器布局设计上使用最底金属层来作返回层会得到较好的特性，最后从此实验得知一结论，利用合适的多层金属架构达到不同的圈数比，不仅可以改善圈数比，还可以缩小晶片面积。

65 Of the number of days in the year)- start of the current 51.6 year private cycle - was the major turn in the British Pound/Us dollar ratio.

1985.65 （ 0.65的天数在一年）-从当前五十一点六年私人周期-是大转折中的英镑/美元的比率。

It was revealed that content of water among nitriding agent, space velocity, final nitriding temperature, temperature rate, the ratio of N2 and H2 all have impacts on the formulation of high surface area γ-Mo2N and the significance reduces in turn.

研究发现氮化剂中水含量、空速、氮化终温、升温速率、氢氮体积比对高比表面积γ-Mo2N/SiO2的形成均有影响，且影响显著性依次降低。

Kepler's laws of Newton discovered the law of gravitation 10000 l ^ D has laid the foundation, then to the law of gravity, in turn, amended the third Kepler principle, namely, the ratio of 32 to strictly say no is a constant with the planets related to the quality of the l ^ D.

开普勒定律为牛顿发现万l^D有引力定律奠定了基础，而后，万有引力定律反过来又修正了开普勒第三定律，即比值32严格说不为常数而与行星l^D的质量有关。

In order to avoid the limitation of using only Tobin's Q to evaluate marketing performance and return on equity to evaluate financial performance, this paper introduces factor analysis to calculate synthesized performance, successfully processing totally 12 original indexes, such as return on net sales, average return on equity, return on total assets, per share earning ratio, current ratio, quick ratio, debt to assets ratio, rate of stock-turn, accounts receivable turnover, total asset turnover, main business growth rate, and total assets growth rate.

为了避免单纯使用托宾Q值度量企业市场业绩以及使用净资产收益率等单一财务指标度量企业财务业绩的缺陷，该文运用了因子分子法求得上市公司的综合绩效，成功地对总共12个原始绩效指标，如销售净利率、平均净资产收益率、总资产报酬率、每股收益、流动比率、速动比率、资产负债率、存货周转率、应收账款周转率、总资产周转率、主营业务收入增长率以及总资产增长率等进行了处理。

A complete transformer model should includes: turn ratio, connection, phase shift, isolation, nonlinearity of exciting current, frequency dependence of shortcircuit impedance, stray capacitance in high frequency and so on.

一个较为完整的变压器模型应包括：变比、联结组、相移、节点的隔离、励磁电流的非线性、短路阻抗的频率相关特性、高频下的杂散电容等特性。

A complete transformer model should include turn ratio, connection, phase shift, isolation, nonlinearity of exciting current, frequency dependence of short-circuit impedance, stray capacitance in high frequency and so on.

一个较为完整的变压器模型应包括：变比、联结组、相移、节点的隔离、励磁电流的非线性、短路阻抗的频率相关特性、高频下的杂散电容等特性。

The role of a-Si:H sublayers is to interrupt the continuous growth and limit the thickness of pc-Si:H sublayers. The a-Si:H sublayers are deposited by two methods, one is fabricated by low hydrogen dilution ratio R = 4, and the second is deposited by pulse-wave modulation plasma with turn-on time (TON = 25 ms) and plasma turn-off time (TOFF = 75 ms).

阻断层所用的非晶矽薄膜采用两种方式制作，第一种是利用低氢稀释比(R = 4)制作的非晶矽，第二种是利用脉波调变电浆开启时间及开关时间分别为25ms及75ms pulse(25ms/75ms所制作的非晶矽。

The studies was proceeded on the the supercritical CO2 extraction technique of rotenone from Tephrosia vogelii. The extraction influences of technology conditions were systematically groped, The research results were listed as follows:1 The analysis method applied in this paper has been proved to be suitable to technology research of the studies on the SC-CO: extraction technique of rotenone from Tephrosia vogelii. 3 indexes, extraction ratio of rotenone. extraction ratio of total compounds and rotenone content percent in total compounds weight, were carried out with HPLC quantitatively determination combined with the sample weight loss after extraction. With these 3 indexes. The extraction influences of technology conditions were evaluated by synthesis. Then the best technology conditions were ascertained for different extraction aims.2 The pretreatment of rough material should be needed before extraction. Comminuting the material to 0.28mm size is most fit to SC-CO: extraction.3 Firstly static extracting 20 min then turn to dynamic doing is the better extraction mode than other ones.4 The orthogonal experiment was conduct with 3 factors and 5 levers.

本论文通过对非洲山毛豆SC-CO_2萃取中影响萃取效果的工艺条件的研究，初步得出如下结果：(1)本论文中所采用的萃取效果评价方法适宜于非洲山毛豆中鱼藤酮的超临界流体萃取技术研究，该方法具体为：HPLC定量分析非洲山毛豆SC-CO_2萃取物中的鱼藤酮含量，再结合萃取前后处理样品的重量损失，得出鱼藤酮萃取率、萃取所得粗物质萃取率和粗物质中鱼藤酮含量三个参数，以此三个指标综合评价萃取条件对萃取效果的影响；(2)通过对原料粒度对萃取效果影响的研究，结果表明SC-CO_2萃取非洲山毛豆复叶中的鱼藤酮，原料粉碎成30目粒度叶粉时萃取效果较好；(3)通过对萃取方式与萃取效果之间关系的研究，结果表明SC-CO_2萃取非洲山毛豆中鱼藤酮应采用先静态后动态的萃取方式，静态萃取时间为20min；(4)通过温度、压力和CO_2流量三因素五水平的正交试验，结果表明温度是最主要的影响因素，压力因素对鱼藤酮萃取率的影响程度高于CO_2流量，而对于粗物质萃取率和粗物质中鱼藤酮含量CO_2流量因素高于压力。

In order to design a BCT with high accuracy, a primary with larger Ampere-turn is selected to achieve the demand. However, since the primary on the BCT is fixed only one turn, the higher accuracy of current ratio cannot be achieved easily for very small current occurred on the power transformer.

然因套管型比流器其一次安匝是固定的，当遇有一次次电流甚小时，因无法增加一次匝数以提高一次安匝，故难以实现较高的准确级。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。