查询词典 impedance drop

This research improves the impedance marching method, by varying duty cycle in a DC-DC converter to make the apparent load impedance matching with current system impedance, and reach the mpp operation.

本论文是改善阻抗匹配法，使其在不同照度下皆能准确做最大功率点追踪，并且应用阻抗匹配法在实际的太阳光能发电系统，经由调整DC-DC转换器中的主动开关之责任周期来达到负载与太阳能板的匹配，达成最大功率传输。

If you say , you must stretch your lips back; for you must round your lips forward; for you drop your jaw down; for you will drop your jaw far down and back; for bring your lips back and drop your jaw a bit; for drop your jaw for the ah part of the sound and pull it back up for the ee part; and for round the lips, drop the jaw and pull back up into .

如果你说，你必须把嘴唇伸展回去；呢，你必须让自己的嘴唇变园；而对于，你需要把下颚放低；对你需要把你的下颚放低再复原；对于，把你的嘴唇收回去，并且稍微放低下颚；呢，就要在ah这个部分放低下颚然后在ee这个部分复原；对于嘴唇成圆形，放低下颚再拉回来发出这个音。

At least, we should memorize the use of the several phrases such as the five meanings of "pick up", drop off and its relevant drop in, drop sb. a line, drop behind, drop out, power used as verb, means and its phrases: by means of; by no means; by this means.

我们至少该记住几个短语的用法，如pick up所表达的五个含义：捡起；用车接……；获得，学到，得到；好转，改进；接收节目。drop构成的各种短语及含义：drop off 散去；走掉；下车；drop in 顺便来访， drop sb。

Point to successive two days appear steep fall, shanghai points to drop for a time approach 5000 bits of col, two city do much power to continue to drop, those who drop from Zhou San occupy about 7 Chengshangsheng arrives to be controlled most probably; And two city clinch a deal 267.2 billion yuan, continue to the limit of one's capacity 7 percent, point to appear to drop urgently continuously of to the limit of one's capacity bad go situation, have 21 drop more than 8%, part a brunt capital is more apparent from field evidence.

股指连续两天出现暴跌，沪指一度下跌逼近5000点关口，两市做多动力继续减退，下跌的个股从周三的约占七成上升到八成左右；而两市成交2672亿元，继续放量7个百分点，股指呈现连续急跌放量的不妙走势，有21只个股跌幅超过8%，部分个股主力资金离场迹象比较明显。

The pressure drop of the compound tray can be regarded as consisting of dry plate pressure drop, clear liquid resistance, liquid surface tension resistance, and packing pressure drop. The model that has established can fairly predict the pressure drop of the compound tray, the value calculated by the model compared with that detected by experiment is less than 20%.

复合塔板的压降可认为由干板压降、清液层阻力、填料层压降和克服液体表面张力的压降四部分组成，所建立的压降计算模型，能较好地预测复合塔板的压降，计算值与实验值误差在±20％以内，可用于工程设计。

The 3rd person sleeps the eye cheats 眬 ground to rise station outside piddle, domestic wine lane is next door, the drop of drop of acoustical drop drop that extracts wine is ceaseless, he thinks he passes water unfinished, stand to dawn all the time unexpectedly.

第三个人睡眼矇眬地起来站在外面撒尿，隔壁是家酒坊，榨酒之声滴滴沥沥不停，他以为自己小解未完，竟一直站到天明。

In order to reduce the energy of that part, three kinds of pressure drop reducing structures are devised and experimented together, such as the straight stick pressure drop reduction frame, grid pressure drop reduction frame and the taper pressure drop reduction frame.

本文设计并实验了三种不同类型的减阻结构：直杆减阻框、栅格减阻框和锥形减阻框以降低排气管内的流动阻力损失。

The results of pressure drop characteristics experiments indicate that the new type cyclone tube's pressure drop reduction extent is directly related to the sticks'number, length and the radial position of the straight stick pressure drop reduction frame; is directly related to the length, width and number of grid pressure drop reduction frame installed under the split flow core tube.

安装在排气芯管内的直杆减阻框、栅格减阻框使旋风管的压降有不同程度的降低，减阻幅度与直杆减阻框杆数和长度成正比；与直杆的径向位置大小成反比；与安装位置、绕流截面形状有一定的关系；并与栅格减阻框的长度、宽度和片数成反比。

Applied with test of potted plant and measurement absorbency for study response of the contents of photosynthetic pigments of slash pine's half-sib under water stress. There are 7 families comparison with general slash pine. The contents of photosynthetic pigments are mensurated under feebleness water stress while soil water content is 55% to 60% and moderate water stress while soil water content is 35% to 40% and heavy water stress while soil water content is 20% to 25%. The test result indicate that either water grads or families of chlorophyll and chlorophyll a and chlorophyll b and Chla/Chlb and carotenoid and Caro/Chl are mighty notable difference. The Chl and Chla and Chlb and Chla/Chlb little drop from normal soil water to initial water stress. Then drop obvious with increased water stress. The Caro and Caro/Chl little drop firstly from normal soil water to initial water stress,then up in metaphase water stress,after drop in evening water stress. The Chl and Chla and Chlb and Chla/Chlb and Caro of slash pine'half-sib are over general slash pine. The Chl and Chla and Chlb and Chla/Chlb and Caro of 464 and 1027 are over average value of slash pine's half-sib under water stress. The Caro/Chl of 609 and 46 are over average value of slash pine's half-sib under water stress.

为研究湿地松半同胞家系光合色素对水分逆境的响应，采用盆栽试验和吸光度测定方法，以湿地松普通种子为对照，测定了七个湿地松优良半同胞家系在弱度水分胁迫（土壤相对含水量为55%~60%）、中度水分胁迫（土壤相对含水量为35%~40%）和强度水分胁迫（土壤相对含水量为20%~25%）条件下的光合色素，对湿地松优良半同胞家系在不同水分胁迫条件下的光合色素进行了研究，结果表明：无论是不同水分梯度还是不同家系水平，Chl、Chla、Chlb、Chla/Chlb、Caro、Caro/Chl均有极显著差异；从正常水分至水分胁迫初期Chl、Chla、Chlb、Chla/Chlb稍微下降，后随着水分胁迫程度的加深下降较快，从正常水分至水分胁迫初期Caro、Caro/Chl先稍微下降，胁迫中期上升，胁迫后期下降；所有半同胞家系的Chl、Chla、Chlb、Chla/Chlb、Caro高于普通种，在水分胁迫条件下家系464、1027的Chl、Chla、Chlb、Chla/Chlb、Caro高于家系的平均水平，家系609、46的Caro/Chl值高于家系的平均水平。

First , measure the open circuit voltage and short circuit current to get the current system impedance, then force the apparent load impedance to match it to make the solar system working on maximum power point.

而如何有效的取得太阳电池的开路电压及短路电流，以便正确计算出太阳电池的内部阻抗则为本论文研究重点。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？