frequency change

The results show that: as for the time and frequency change of fog and haze visibility in Shanwei, the maximum value occurred at 8 ∶ 00, then declined gradually from 8 ∶ 00 to 14 ∶ 00, and the minimum value at 14 ∶ 00;

结果表明，汕尾市雾霾天气能见度的时次变化都是在08时次出现最多，在08~14时次逐渐减少，在14时次出现最少；

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A simplified lntegration Method for Reaction Rate Laws in Several Substance; Finite element analysis on modal frequency change regulations of the damage simple-supported beams

多种反应物的化学反应速率简便积分方法损伤简支梁模态频率变化规律有限元分析

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The Effect of Respiratory Frequency Change on Tidal Volume and Minute Volume during One-lung Ventilation

单肺通气时改变呼吸频率对潮气量和每分钟通气量的影响

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Consumer is mixed to mature digital frequency change quickly of video recreational demand.

生产者对成熟的数字音频和视频娱乐的需求一日千里.

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However, the air change in the amount of information in the underwater acoustic communication, time-varying, frequency change and other characteristics caused by inter-symbol interference, seriously affecting the quality of communication.

但是，水声通信中信息量的空变、时变、频变等特性引起的码间干扰，严重影响了通信质量。

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Quartz Crystal Microbalance ( QCM) is a mass detector based on quartz crystal oscillation, employed to monitor samples real timed, on lined by frequency change associated to mass change of analysis matter.

石英晶体微天平（QCM）是一种基于石英晶体振荡的质量检测技术，基于振荡器对分析物的质量吸附导致频率改变这一关系可对待测物实行实实时、在线的检测。

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Application of frequency change speed governor in AC motor used for heat treatment in boiler making industry

交流变频调速器在锅炉制造行业热处理炉风机上的应用

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Abstract: the frequency change and speed adjusting has become the backbone of modern electrical transmission and it is the necessary technics of modern chemical fibre industry.

摘要：变频调速技术已成现代电气传动的中枢，也是现代化纤行业必备的工艺技术。

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Frequency change and heart rate variability analysis of day and night-time in patients with coronary heart disease of ventricular premature beats

冠心病室性早搏发生频次的昼夜节奏变化与心率变异分析

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Objective: To find out frequency change parameters of four phonation methods ( minimum, natural, maximum and falsetto maximum voices) and different maximum phonation persistent time ( MPPT) of them in patients with glottis closure disturbance ( GCD).

目的：了解声门闭合不良4种发声方式（最低音、舒适音、真声最高音和假声最高音）和不同发音持续最大时间（最大声时）的频率变化参数。

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