A verification method of sound level meter's low frequency record used near sound field of circular piston sound sources

Study on testing L_ ( eq) function of the sound level meter with step wave method

阶梯波法测试声级计L（eq）功能的研究

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The effect of the sampling frequency on the time averaging characteristics of integrating sound level meter

采样频率对积分声级计时间平均特性影响的研究

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Evaluation, analysis and control index are mainly based on the dB value of sound level meter.

而且噪音的评价分析和控制指标也多基于声级计的分贝数大小。

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Experimental Research on Anti-Electromagnetic Radiation Interference of Sound Level Meter

声级计抗电磁场辐射干扰试验研究

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Design ang Analysis of Intelligent Sound Level Meter

智能声级计的设计与分析

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Remote Measurement and Control System of Sound Level Meter Based on Embedded Web Server

基于嵌入式Web的远程声级计测控系统

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The Design and Research of the Engine of Digital Sound Level Meter

数字声级计（DSLM）引擎设计与研究

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The Automatic Measurement System of Sound Level Meter Based on PULSE System

基于PULSE系统的声级计自动检定测试系统

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Secondly, experiments were made to analyze the effect of the wheel damper, we used the system composed of a self-made pendulum, three acceleration sensors, a four-channel charge amplifier, a sound level meter, a signal collection analyzer and the DASP software.

其次，对车轮阻尼器的降噪效果进行实验分析。实验采用激振单摆、加速度传感器、电荷放大器、声级计、智能信号采集处理分析仪以及DASP软件组成的测试系统。

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Sound level meter ( SLM), which is the basic acoustics instrument, has been widely used for measuring sound level.

声级计是测量声压级的仪器，也是声学的基本仪器之一，被广泛的应用在各行各业。

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Presently, enterprises have done much in the accepts of customers and product maintenance. The most primary and direct guidance is the product maintenance manual.

目前，企业在用户接受与产品的维护维修方面做了大量的工作，最主要、最直接的指导就是产品的维修手册。

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The application of this system in maintenance design, analysis, maintenance training and service manual generation is presented.

对系统在维修性设计分析（核查）、维修程序确认和辅助维修训练中的应用进行了说明。

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This modular approach, beginning with Manual Tester, reduces maintenance costs for both manual and automated testing.

此种由Manual Tester开始的模块化方法减少了人工和自动测试的维护成本。

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After you run the maintenance plan wizard some manual configuration is required.

运行维护计划向导后，需要进行一些手动配置。

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Transmission line maintenance scheduling by manual work is hard to consider both the reliability and economics presently, while optimizing algorithms are able to keep their balance.

目前人工编制检修计划的方法，无法综合考虑输电线路检修的可靠性和经济性，而优化算法可以实现两者的平衡。

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Typically, test script maintenance, whether manual or automated, is the single largest drain on testing resources.

通常，测试脚本维护，不论是手工的还是自动的，都是测试资源的最大消耗。

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Conventional network security techniques ( such as firewall, encryption technique etc) have limited defense effects, but all of them belong to the category of static security techniques, their main drawback is that their implementation and maintenance need manual work, and cannot actively follow intruder.

虽然传统的网络安全技术（如防火墙、加密技术等）有一定的防卫作用，但都属于静态安全技术范畴，静态安全技术的缺点是需要人工来实施和维护，不能主动追踪侵入者。

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Conventional network security techniques such as firewall and encryption technique have limited defense effects, and all of them belong to the category of static security techniques whose implementation and maintenance need manual work.

虽然传统的防火墙、加密等信息安全技术有一定的防御作用，但都属于静态安全技术范畴，需要人工来实施和维护。

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Geothermal plants According to the maintenance manual for the Svartsengi Island geothermal plant in Iceland, every six months the operators must change the gearbox oil and regrease all electric motors and couplings.

地热发电厂根据冰岛史瓦森吉岛上地热发电厂的维护日志，操作人员需要每6个月就更换一次齿轮箱中的机油，并给所有发电机和链接机构涂上润滑油。

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They regularly failed to replace the HP rotor-drive cover O-rings, or to conduct idle engine runs, both specifically required by the aircraft maintenance manual.

他们经常会不更换高压转子驱动盖子的O型封圈或不试车，而这两者都是维护手册规定必需做的。

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