查询词典 attenuators

The transfer standards were two fixed attenuators with a nominal attenuation of 60dB and 100dB respectively and one switchable attenuator of 100dB.

比对结果是：60dB衰减量的最大差值为0.064dB，100dB衰减量的最大差值为0.125dB。

By appropriately adjusting the optical attenuators, the phase shift between two adjacent channels is achieved, thus 8-channel optical quantizer is realized with resolution of 4 bits.

实验中对10 GHz的正弦信号进行了光量化测试，量化结果的有效比特数为3.7 bits，仅低于理想分辨率0.3 bits。

Beijing BED Tech-Trade Development Co Ltd is a high-tech joint-stock enterprise which has been engaged in the research, manufacture trade of the rf high power dummy load power meters, attenuators terminations.

北京贝尔德科技有限责任公司是一家集科研、生产、贸易为一体的高科技股份制企业。从事《BED》为品牌的全系列负载功率计，及射频微带系列电阻、负载、衰减器件等产品的开发、生产。

Providing the highest quality products and service both in domestic and overseas is the most important principle of Yuwei. Our products cover: patch cords, pigtails, couplers/splitters, connectors, WDMs, adapters, attenuators, and so on.

为国内外高端用户提供高品质的光无源器件是上海玉炜的品质理念，公司产品覆盖光纤跳线、尾纤、光纤分路器、光纤波分复用器、光适配器、光衰减器等领域。

This paper introduces the method of eliminating noise with attenuator. Each end of the specimen is covered with a metal cap and attenuators are inserted between metal caps and load platens. so noise is reliably eliminated, true AE signals of rock are detected and the reliablity and the precision of the data are improved.

本文介绍的衰减器排噪法，采用试件两端粘接金属端帽，加载压板与端帽之间安装衰减器，从而可靠地排除了噪音，检测到了岩石试件真实的声发射信号，提高了检测数据的可靠性和精度。

Since first introducing the L3 kit back in 2005 (known then as the M3 Line Kit) we have received many enhancement requests for the L3 from the Audiophile community including Extension Kits for the selector switch, optional Stereo and mono stepped attenuators, transformer options, different price points etc.

自从第一次介绍了三级包在2005年（当时已知的M3货币供应线包）我们已经收到了许多增强的要求的三级从高保真社会包括扩展套件选择开关，可选立体声及单声道的阶梯衰减器，变压器的选择，不同的价格等

Since 1951, TROX has been designing, developing and also producing various kinds of technology products, like air diffusers, air to water system, filter units, control units, attenuators, fire dampers, smoke detectors and lab control systems.

自1951年创立至今，妥思设计、开发和生产各类风口、气水系统、过滤器、风量调节阀、消声器、防火阀、工业阀、实验室变风量控制系统等通风空调末端设备。

Based on regression analysis between PAR attenuation coefficients, euphotic depths, secci disc and main light attenuators, phytoplankton and organic suspended solid play a main role in regulating the attenuation of light.

对PAR衰减系数、真光层深度、透明度等表观光学参数与主要水色因子进行相关分析发现，水体中浮游藻类和有机颗粒物对西湖水体光学性质影响最大。

The company's main products: fiber optic connectors, adapters, attenuators, couplers and other passive components; fiber optic cable connector boxes,cable, fiber optic distribution frame, fiber optic wiring products such as the transfer box; Optical Power Meter and other communication equipment.

公司的主导产品：光纤连接器、适配器、衰减器、耦合器等无源器件；光缆接头盒、光缆终端盒、光纤配线架、光缆交接箱等配线产品；光功率计等通信仪器。

The results show that this attenuator, which is 12mm×8mm×0.5mm and works at low temperature, can be used alone or integrated into HTS system to decrease system volume and weight. Insertion loss of this attenuator is about 0.2dB, whose magnitude is one order lower than that of a conventional attenuator. Attenuation step about 0.01dB can be achieved, which is 1~2 orders lower in magnitude than conventional attenuators.

主要结论如下：光控高温超导微波可变衰减器在液氮温区工作，电路尺寸为12mm×8mm×0.5mm，可单独使用也可集成于高温超导系统中，可大幅减小系统的体积与质量；高温超导衰减器的插损小于0.2dB，比常规衰减器低1个量级；高温超导衰减器的可变衰减步进值小于0.01dB，比常规衰减器低1~2个量级。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。