1·As the result of seasonal fluctuation of water, the total Hg concentration of water and sediment would be degressive in sequence of low water, flush time and ordinary level.
水位随季节周期性消落，将导致水体相和沉积物相中的总汞浓度按枯、丰、平顺序依次递减。
2·The load of the main diesel generating system on a degaussing ship is impulsive, which rise to the maximum value and drop to the minimum value in very short time, and its ranges are degressive.
消磁船主发电机组所带的是典型的脉冲负载，具有变化幅度大和依次递减的特点。
3·The failure curve of the horizontal machine center during the forepart fault is degressive, the internal time is Weibull distribution.
卧式加工中心在早期故障期时，故障率曲线为递减型，间隔时间服从威布尔分布。
4·Two effects of technological alternatives of enterprises in the economic society are discussed: the economy scale, and the appended bonus degressive rule.
介绍目前经济社会中影响具体企业进行技术选择的两个因素，规模经济性和边际报酬递减规律。