查询词典 indoor antenna

There are few equivalent circuit modeling methods for UWB antennas. This thesis compares the characteristic of some existing modeling methods and presents a general and precise modeling method for UWB antennas. Firstly, establish the narrowband model of the antenna, and compute the difference between input admittances of the antenna and its narrowband model. Secondly, implement rational approximation of the difference to build the macromodel, and convert it into SPICE equivalent circuits. Lastly, combine the narrowband model and the macromodel to form the ultimate equivalent circuit model of the antenna.

本论文针对目前UWB天线等效电路建模方法比较少的现状，结合现有的天线建模方法的一些特点，研究了一种系统通用、模型精度高的新建模方法：首先建立超宽带天线的窄带模型，计算天线及其窄带模型导纳的差值；接着对差值进行有理多项式拟合，得到相应的宏模型，并转化为SPICE等效电路；最后合并窄带模型与宏模型电路，得到天线等效电路模型。

Company's main products are indoor coverage systems used in aluminum chamber, the board antenna, rubber antenna, eight antennas, and other wood used in plastic housings.

公司主要产品有室内覆盖系统使用的铝腔体，板型天线、橡皮天线、八木天线等所使用的塑料外罩。

In this paper, basing on the investigation on the condition of house decoration and indoor air pollution in city dwelling houses in Wuhan, we concluded the general characterization of indoor air pollution in Wuhan . It is listed as following: The indoor formaldehyde concentration exceeds the requirements of standard among 80 percent of the newly decorated houses. The benzol concentration of some exceeds the requirements of standard.

本文首次对武汉城市住宅进行了较大范围的室内装修情况及室内空气污染现状调查，总结出武汉城市住宅室内空气污染的总体特征：新装修住宅80%存在室内甲醛浓度超标问题；少数(大约10%)存在苯浓度超标问题；氨浓度和氡浓度均没有超标。

It change the normal method for "beginning control" and "goal control". With the development of living level, upholster is dispensability for indoor, the using of decorative material produce plenty of poisonous、baleful chemical substance. These substance make the air indoor into bad, and threaten the healthy in the door if these cumulate .What"s more it will reduce work efficiency. The past method of IAQA is subjective assessment or giving priority subjective assessment. But people will adapt to indoor environment due to settle in the door long-term, which it lead to incorrectness. So, we can"t only use subjective assessment for IAQ. In this article, the author bring forward the best and the reasonable assessing method ,which it is combining the subjective assessment to objective assessment.

随着生活水平的提高，室内装潢成为家居装饰不可缺少的部分，装饰材料的应用，会产生大量的有毒、有害化学物质，使得室内的空气质量变差，且长期累积会威胁室内人员的身体健康，导致工作效率低下，过去对室内空气品质的研究仅用主观评价方法或以主观评价为主对室内人员的主观感受做调查，但是由于室内人员对室内的环境具有适应性，从而造成评价的不准确，且过去对化学微污染物的影响没有定性的研究，因此，用该方法进行评价显然是不准确的，所以，本文提出用主观评价和客观评价想结合的评价方法对室内空气品质进行综合评价。

This paper analyzes the origins of the indoor methanal and benzene and other pollutants,discusses the influence of these pollutants on the indoor air and the harmfulness of these pollutants on the human health,and briefly introduces some methods for treating indoor air pollution.

分析了室内甲醛、苯及其他污染物的来源，讨论了这些污染物对室内空气的影响及对人体健康的危害，概要介绍了室内空气污染治理的方法。

To prevent epidemical disease prevalence caused by microorganisms in indoor air, a study was carried out to investigate the effect of ventilation, peracetic acid and ozonization on microorganisms reduction in the indoor air within a campus. The experimental results indicated that ventilation was an effective measure in reducing indoor air microorganisms with economy and simple operation.

为了防止室内空气微生物导致的传染病发生，对某校园室内的空气进行通风、过氧乙酸和臭氧灭菌降低微生物的实验研究结果表明，通风可以有效地降低室内微生物的浓度，是最为经济和易行的措施；过氧乙酸灭菌效果好，持续时间较长，可在不易实施通风情况下采用过氧乙酸灭菌；臭氧具有迅速杀菌的效果，使用时要与人保持一定距离，最好超出 1m。

This test with the summer west side to test, the main measurement (1) aluminum roller blinds outdoors with indoor surface temperature differ,(2) the outdoors temperature and indoor temperature and (3) the outdoors and indoor relative humidity.

本研究测试对象以夏季时西南侧立面窗为主，主要量测(1)铝卷帘模组内外表面温度，(2)室外温度与室内平均温度，(3)室内外相对湿度。

Based on preliminary evaluations of the use of common indoor plants for indoor air purification and revitalization, ALCA joined NASA to fund a study using about a dozen popular varieties of ornamental plants to determine their effectiveness in removing several key pollutants associated with indoor air pollution.

基于对使用普通室内植物净化室内空气和再生新鲜空气的初步评估，美国园林产业联合会与美国国家航空航天局共同赞助了一项研究。该研究用约12种常见的观赏植物，测定它们清除与室内空气污染相关的几种主要污染物的效力。

Based on preliminary evaluations of the use of common indoor plants for indoor air purification and revitalization , ALCA joined NASA to fund a study using about a dozen popular varieties of ornamental plants to determine their effectiveness in removing several key pollutants associated with indoor air pollution .

基于对使用普通室内植物净化室内空气和再生新鲜空气的初步评估，美国园林产业联合会与美国国家航空航天局共同赞助了一项研究。

This machine use the dry and clean constringent air as energy、through airflow high-speed eject to make the grinder indoor be a grinding, classification round surface and be a pressure difference indoor then raw materials are automatically inhaled the indoor of grinder with the help of ultrasonic airflow what 4-16 spray head eject (producing the impacted energy E=1/2mv2), raw materials rotate at a high speed on the classification round surface and bring the litter store and make the raw materials granules hit and rub together to attain the supper fine materials.

本机组以干燥洁净的压缩空气为动力源，通过气流高速喷射，使粉碎室内形成一个粉碎、分级圆面，并在粉碎室内形成压力差，则物料自动吸入粉碎室，在4到16个喷头所喷出的超音速气流作用下（产生冲击能E=1/2mv2），物料在分级圆面上作高速通常在2-3马赫内，对于硬度低、脆性物料工作压力可低到0.6-0.7MPa。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48