Inactive people should start with small amounts of physical activity and gradually increase duration, frequency and intensity over time.
缺乏活动的人在开始时应做少量的身体活动，并随时间逐步增加活动时间、频率和强度。
It is appropriate to start with smaller amounts of physical activity and gradually increase duration, frequency and intensity over time.
适宜的方法是，从较小的活动量开始，然后随着时间的推移，逐渐增加持续时间、频度和强度。
Once you get used to the process, increase the frequency and/or duration, but it’s more important that you keep at it over time than it is that you’re consistent in intensity over time.
等到你已经习惯了之后，再增加次数和强度，但最重要的是保持这个习惯而不是每次都要求保持强度。
The color sonagram shows image in three dimensions of time, frequency and intensity.
彩色声图可显示三维图象，即时间、频率及强度关系图。
This paper explores the feasibility of ultrasonic technology leading to produce fire-retardant wood and test conditions such as frequency, sound intensity and time etc.
探讨了超声波应用于木材阻燃浸渍处理过程的可行性，同时讨论了超声波试验参数频率、声强、辐射时间等的选择。
It is found that their sport involvement time is short, intensity is low, frequency is low, the percentage of sport person and sports consumption are low, etc.
结果发现，高级知识分子参与体育活动的时间较短且强度低、频率低，参与体育消费的水平较低。
It researched the experimental method of high-pulsed electric field to milk's sterilization, which measured the sterilization ratio in different electric field intensity, treatment time and frequency.
介绍了利用高电压脉冲电场对牛乳灭菌的试验检测方法，并进行了不同电场强度、脉冲频率及处理时间对牛乳灭菌效果的对比试验。
The longitudinal distributions of source intensity spectrum of several typical ships is given on the basis of time frequency analysis of the passage signature of ship radiated noises.
籍助对舰船噪声通过特性信号的时频分析，得到了若干典型舰船的噪声源强度谱纵向分布特性。
Such dust storm weather has the new characteristics below: higher frequency, stronger intensity, larger influence areas, earlier occurring time, and longer lasting time.
沙尘暴天气呈现频次高、发生时间提前、发生期时间长、强度大、影响范围广等新特征。
We used a Mega Hz focused transducer to focus on the surface of the calculus model and tried different frequency, intensity, time and duty cycle.
本文利用兆赫兹频率级别的聚焦超声换能器诱发冲击波作用于结石模型材料，采用不同的声波参数包括频率、强度、占空比等进行了实验。
Different sport exercise, different training intensity, time and frequency have different impact on weight and body composition.
不同的运动锻炼方式，不同的锻炼强度、时间和频率等，对体重和体成分的影响都有所不同。
The influence regularity of vibratory parameters such as amplitude, frequency, centrifugal force, intensity of pressure, time of vibratory and material factors such water content is studied.
从静面压力、激动力、频率、振幅和振动时间等振动压实参数以及含水量对黄土振动压实效果的影响因素进行了系统的分析。
The effects of ultrasonic frequency, ultrasonic intensity, cleaning time, cleaning temperature on oil sand separating were investigated.
考察了超声频率、超声声强、清洗时间和清洗温度对油砂分离的影响。
The statistical model of frequency and intensity of anomalous microtherm events in Nanjing is established by means of the extreme value distribution theory of stationary time series.
本文借助于平稳时间序列的极值分布理论，对南京地区异常低温事件频次和强度建立统计模型。
Results (1) The parameters of ea at Fenglong (ST 40) for regulating blood lipids in primary and secondary orders are: frequency, needle-retained time, interval of treatment, intensity.
结果：(1)电针丰隆穴调节血脂各因素(参数)的主次顺序为：频率、留针时间、治疗间隔、强度。
The contrasting results show that sound intensity, radiation time and frequency are the main factors, and the secondary factors are test temperature, working mode and settlement time.
对比实验研究表明：声强、辐照时间和频率是影响破乳脱水率的主要因素，而实验温度、工作方式、沉降时间等为次要因素。
Adjust intensity, frequency and time.
调整强度、频率、时机。
Parameters such as frequency, intensity and pretreatment time of ultrasound are varied.
讨论了声场参数，即频率、声强、超声辐射时间对该过程的影响。
The variation of chromatic dispersion induced delay time error of the true time delay line based on dispersive devices is investigated using an intensity-frequency modulating model.
利用强度频率混合调制模型研究了基于色散器件的光真延时线中色散导致的延时误差的变化规律。
The noise power, sound intensity, sound pressure, vibration acceleration and corresponding time-frequency spectrum of 6480 driver axle surface were measured and analysed.
通过对6480型驱动桥的噪声功率、表面声强、表面声压、表面振动加速度以及相应的时频谱进行了全面、系统的测量和分析。
The noise power, sound intensity, sound pressure, vibration acceleration and corresponding time-frequency spectrum of 6480 driver axle surface were measured and analysed.
通过对6480型驱动桥的噪声功率、表面声强、表面声压、表面振动加速度以及相应的时频谱进行了全面、系统的测量和分析。
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