前置

At first, this paper gives the brief introduction of the history and present status of accelerometer and its testing technology, the working principium and math model of the liquid floated pendu-lous accelerometer, and then, decides the binary width pulse force retrim loop as the design proposal of testing system, researches the transfer function of every part in the system emphasizly, analyses the stability of the whole accelerometer testing system from the angle of control theoretics by the open loop transfer function of system, and designed the correcting net, analyses the basal problems such as resolution, sampling restraint, precision and so on, designs the hardware testing circuits such as preamplification, band-pass filter, alternating amplifier, phase sensitive demodulatorn, pulse-width modulation, frequency scale circuit, moment current generator. Finally, using the graphics program language LabV-IEW which is designed for testing field especially by NI accomplishes the solfware design of testing system,realized the testing functions.

首先对加速度计及其测试技术的发展历史和现状，液浮摆式加速度计的工作原理和数学模型等作了简要的介绍，然后确定了以二元调宽脉冲再平衡测试回路为设计方案，并从控制理论的角度进行了分析，着重研究了系统中各部分的传递函数，利用系统开环传递函数分析了系统的稳定性，同时设计了系统的校正网络；分析了二元调宽脉冲再平衡测试回路的分辨率、采样约束以及测试精度等基本问题，并按照系统分析的结果设计了包括前置放大、带通滤波、交流放大、相敏解调、脉宽调制、频标电路以及力矩电流发生器等测试系统各部分硬件电路，验证了电路的正确性，最后按照测试系统的要求，采用了美国NI公司专为测试领域所开发的虚拟仪器工具——LabVIEW作为测试软件开发工具，利用该图形化编程语言完成了测试系统软件部分的设计，实现了测试功能。

The 24-bit stereo FX processor, IMP mic preamps, Voice Canceller and more roun

配有24 比特立体声效果处理器，无形麦克风前置功放和其他让人惊讶不已的功能和特点。

The isolated SEPIC converter working as a high-power-factor preregulator is studied in this thesis.

中文摘要本文探讨以隔离式SEPIC电力转换器作为AC-DC高功因前置稳压器。

It's helpful in SPAD device optimized design and its subsequent electronic circuits and applications.

该电路模型可以直接应用于后续信号读出电路及前置放大电路系统的仿真设计，调节电路参数，优化电路性能，从而节省后续电路设计与制作的时间。

Expose the fibula including the lateral malleolus subperiosteally and incise the sheaths of the peroneal retinacula and tendons, permitting the tendons to be displaced anteriorly.

骨膜下显露腓骨及外踝，切开腓骨肌支持带及腓骨肌腱的腱鞘，前置肌腱。

The logistics managers must determine the symphonious policies of purchasing, product and transportation, and through the long purchasing contract to transport the high-quality products from supplier to buyer, and shorten leading time of buyer and reduce mutual stock level at a minimum total joint cost.

供应链系统中的管理者必须规划出具有协调机制的采购、生产与运输货品策略，并且透过长期采购合约，买卖双方密切合作，约定卖方少量多频率的运送高品质产品给买方，来缩短买方的前置时间与降低彼此的存货水准，进而使得整体供应链的总联合成本最小化。

It refers to such amethod whereby a clearing house configures the Image Exchange System with theB/S structured FEP for itself and the banking financial institutions within itscoverage to use.

该方式指，在票据交换所部署影像交换系统基于B/S结构的前置机，供该票据交换所及其票据交换覆盖范围内的银行业金融机构使用。

Objective: To investigate the importance of perioperative nursing in patients who underwent cervical transfixion because of cervical dysfunction or placenta previa.

目的：介绍妊娠期宫颈内口松弛和前置胎盘用宫颈缝扎术矫治的围术期护理。

The FWD cars, usually, have transversally placed engines (unless they are ready to mount a 4WD system, as for instance Audi).

前驱的车通常前置横列引擎（除非它们采用四驱系统，比如奥迪）。

This article discusses the classification of medical accidents , the preposition of administrative adjudication which is not included in the regulation , appraisal of medical accidents , safekeeping and unsealing of case history , and some problems concerning the compensation system of medical insurance .

文章就其在医疗事故分级、医疗纠纷诉讼仍未设置行政裁决前置、鉴定方面、病历资料的封存和启封及医疗保险赔偿机制方面存在的问题作一阐述，并提出建议性的解决办法。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。