查询词典 pre-amplifier

The elementary circuit of the receiver is made up of PIN photodiode , pre-amplifier, main amplifier , automatic gain control and regeneration circuit .

光接收机的基本结构由光检测器、前置放大器、主放大器、自动增益控制电路和再生电路所组成。

The magnetizer consists of coil and incentive power, and AE testing system consists of sensor, pre-amplifier, main-amplifier and filter.

本测试系统的硬件部分由磁化器和AE检测系统两部分组成，线圈和激励电源组成磁化器部分，传感器、前放、主放和滤波电路组成的AE检测部分。

This design are composed of pre-amplifier, after-amplifier, and the modules of display and control based on microcontroler.

本设计由前级放大电路、后级放大电路和单片机显示与控制模块构成。

If you only have an old turntable and no amplifier, you will need to amplify the signal using a pre-amplifier before plugging it into the PC sound card.

如果你只有一个老唱盘，没有放大器，你需要使用前置放大器将信号放大，然后再将其与电脑声卡连接。

It also introduced every parts of signal process system,including the pre-amplifier,correlated double sampling circuit,amplifier...

测试结果表明该系统成功抑制了噪声，满足太阳X射线观测的要求。

Low γ ray with 59.6keV energy acts as excitation for rare earth inaqueous and organic phase samples in separation processes by solvent extraction. As aresult, characteristic K series X-ray fluorescence of rare earths emitted. X-ray wasdetected by high purity planar Ge after transmitting Be window. The signals wereamplified by pre-amplifier or main amplifier, and the amulated signals are converted todigital ones.

对溶剂萃取法生产稀土流程中的有机相和水相试样，采用放射性核素〓的59.6keV单色能量激发稀土元素，得到特征K系X射线荧光，透过Be窗经高纯平面锗半导体探测器检测其强度，再经放大器、模数转换和多道缓冲存诸记录试样的能谱。

But normal pre-stack migration imaging method could not meet the need of exploration in great fault with big obliquity and strong anisotropism glutenite body.Pre-stock time migration processing technology could be applied in studying on pre-stack migration pre-processing technology, establishing final velocity model and electing key parameters.

采用叠前时间偏移处理技术，开展针对性的叠前预处理技术、精细的速度模型建立和关键参数的合理选取等研究，三维叠前时间偏移处理较常规三维叠后时间偏移处理获得了较高质量的成像剖面，且输出的道集可以用于砂砾岩体储层描述研究。

In this paper I compare and study of pre-trial preparation outside the civil system and inspect the reform on the judicial practice and development of the system of pre-trial preparations of the thread, try to improve our pre-trial preparation process to find a feasible path, and the corresponding theoretical ideas. The main ideas are: First, in building a well-prepared pre-trial procedures, we must first solve the problem of litigation patterns" change and the introduction of partyism litigation concept; Second, establishing the indicting and replying procedures and replying losing rights rules, which are suitable for China"s national conditions; Third, redistributing the powers of judges and the parties and enhance the status of the main parties, further strengthen the parties evidence-gathering capability; Fourth, reshaping our mediation system.

本文比较研究了域外的民事审前准备制度，考察了我国司法实践中关于审前准备制度的改革和发展的脉络，力图找到完善我国审前准备程序的可行路径，并提出了相应的理论设想，主要有：第一，在我国构建完善的审前准备程序，首先要解决的问题是诉讼模式的转轨和当事人主义诉讼理念的引进；第二，确立适合我国国情的诉答程序以及答辩失权制度；第三，重新分配法官和当事人的权限，提升当事人的主体地位，进一步加强当事人的证据收集能力；第四，重塑我国的调解制度。

In order to study the effects of pre-heating on the sensitivity of cells to tumor necrosis factor-α, the K562 cells were pre-heated at 40℃ for different times to induce heat shock protein 70(HSP70). To observe the effects of TNF-α concentration on the sensitivity of pre-heated cells, cells were pre-heated for 60 min and treated with TNF-α(50,100,200 and 400U/ml) for 16 hours, and the cells vitalities were detected by MTT.

为探讨预热对肿瘤细胞肿瘤坏死因子α敏感性的影响及其机理，将白血病患者胸腔渗出细胞系(K562细胞)在40℃预热不同时间(0、30、60、90、120、150和180min)，使细胞热应激蛋白70(HSP70)高表达；然后将预热60min细胞和未预热细胞分别暴露于50、100、200和400U/ml的TNF-α16小时，用MTT比色法检测细胞活力。

Based on a great deal of thesis, this survey takes current study result of education and pre-education fairness as the theoretical support and refers to the representative domestic research examples. Through the analysis of pre-education in guangfeng, Jiangxi Province, it grasps the current situation and characteristics of the overall pre-school education in the region, deeply analyze the causes of the phenomenon and propose specific measures in order to help promote pre-school education in the region.

本次调查参阅了大量的文献，以区域性教育公平、学前教育公平的现有理论研究成果为理论基础，以国内具有代表性的研究实例为参考，通过对江西省广丰县这一具体区域的学前教育的分析，整体把握该地区学前教育公平的现状、特点，解析该现象产生的原因，旨在对促进该地区学前教育的发展有所启示。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。