有效质量

To validate the proposed method, numerical simulation and a vibration mode test of a cantilever beam are completed, where the mass varies continuously with time.

为验证方法的有效性，进行了数字仿真和附加质量随时间连续变化的悬臂梁的模态分析试验，试验结果和理论结果比较，表明了提出的线性时变系统的模态参数识别方法有效、可行。

It was found that introducing 15 g/L additive containing 1.5 g saccharin helped to well retard electropolishing-induced corrosion of the electropolished improve the quality of the electropolished moldboard surfaces. At the same time, it was feasible to realize satisfactory precision electropolished of the laser moldboard made of stainless steel at a current density of 20~25 A/dm^2, duration of 1 min, and temperature of 60~65 ℃. The resulting polished moldboard had smooth walls and bright surface, while the corrosion was less than 0.005 mm.

结果表明，添加剂含量在15 g/L时能有效抑制抛光的腐蚀量，提高抛光质量；在精抛光的参数电流密度为20~25 A/dm^2，温度60~65℃，时间1 min条件下，钢片经去毛刺处理和精抛光处理能达到孔壁光滑、腐饮量小于0.005 mm的要求。

Simulation results demonstrate that this mechanism can depress PLR and improve QoS performance of MDC transmission with MPT.

仿真试验验证了该机制可有效降低传输丢包率，改善多描述符编码多径传输的服务质量。

Switching multigroup capacitor quickly ,frequently, to keep the electric power factor always in good condition which can reducing the circuit consume in maximum and increasing the transformer's effective output capacity ,optimize the power quality.

对多组电容器进行快速而频繁的投切，使受电功率因数始终保持在最佳状态，从而最大的限度地降低线路损消耗和增加配电变压器的有效输出容量，优化用电质量。

During December 1st 2006 to May 30th 2007, data collection was conducted by the semi-structural in-depth interviews and questionnaires of Pittsburg Sleep Quality Index, social support scale and Parental Stress Index to repeatedly measure 14 primipara and multipara in three time periods: the first week after the birth, the first week after the infant is transferred out, and the first week after they go home.

於2006年12月1日至2007年5月30日期间，分别在早产儿出生一周、转出加护病房一周以及返家后一周，以匹兹堡睡眠品质量表、社会支持量表、亲职压力量表，重复追踪14位初经产妇并进行半结构式深度访谈，以更深入了解早产儿母亲之睡眠品质及其影响因素，研究对象有效答覆率为93.33％。

One so powerful and effective that it adds new meaning to mass, strength, muscularity, performance, and recovery.

一个如此强大和有效的，它增加了新的含义，质量，强度，肌肉发达，性能和恢复。

As one of the developing countries, the aim of our sustainable development should emphasize on both the economy growth and the economy growth pattern which can help to achieve the goal that coordinates with the natural property, the environment capacity and the life quality.

作为发展中的大国，我国的可持续发展既要注重经济增长，又要审慎选择推动经济增长的模式，以达到与自然资产基础、环境承载力相协调的生活质量得以有效稳步提高的目标。

Effective management is the assurance of quality and efficiency of network information service of the library.

有效的管理是图书馆网络信息服务质量和效率的保证。

The results showed that short SRT bacteria and nitrobacteria can be cultivated separately in the reactor so that the concentration of nitrate in the circumfluence sludge is low, which is lower than 1 mg/L.

结果表明，在反应器内能实现短泥龄细菌和硝化细菌的分相培养，有效降低了回流污泥中硝态氮的质量浓度，其值小于1mgL^(-1)。

These detection methods are convenient,stable and reliable for the quality control of nitroglycerin transdermal delivery systems.

两种测定方法简便、稳定、准确，能有效地反映硝酸甘油贴膜的质量。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新