Study of the active immunity on plants

Active residential solar heating system

能动式住宅太阳热取暖系统

Study on Optimal Activity Duration in Fuzzy Network

模糊网络的活动最优延续时间分析

There is a direct relationship between an activity duration and the manpower needed to perform it.

活动持续时间与执行活动所需的人力之间存在直接关系。

The activity duration is insufficient; the growth duration is 130 days;

活动持续时间不充足；生育期130d；

Effects of the activity of ground-strontium slag as cement admixture were analyzed from three aspects: mortar strength value, compressive strength ratio of mortar and specific strength indicators.

分别从胶砂强度值、胶砂抗压强度比和比强度指标三方面分析磨细锶渣作为水泥掺合料的活性效应。

Study on Improvement of Reaction Activity of Phosphogypsum in Cement System

提高磷石膏在水泥系统中反应活性的研究

The optimized particle distribution of composite cement should make the packing density and the hydration activity of the cement a good match so that proper packing density will be gained and enough hydrates will be produced to fill up the voids of the cement paste.

复合水泥的最佳粒径分布应该使体系的堆积密度和水泥颗粒的水化活性相匹配，使体系获得尽可能大堆积密度，同时所产生的水化物足以使体系的原始孔隙被完全填充。

The results showed that the water requirement for normal consistency of cement increased and the early setting time shortened as well as the final setting time prolonged, the 28d activity index of cement mortar reached 82%.

研究结果表明：抛光砖粉作水泥混合材时，水泥的标准稠度用水量增加，初凝时间缩短、终凝时间略有延长；水泥28d胶砂强度活性指数可达82%；

Influence of temperature on activity of slag cement

温度对矿渣水泥活性的影响

The investigation and analysis on natural radioactivity nuclide specific activity of cement product in china

我国水泥产品天然放射性核素比活度的调查分析

The rapid detection test of portland cement strength is important to speed up the construction of civil engineering, ensure the quality of concrete and utilize accurately the activity of cement.

工程实际中应用快速测定硅酸盐水泥强度，对于加快土木建筑工程施工速度，确保混凝土质量，充分合理地利用水泥活性十分重要。

The Gender Differences Research of Preschooler's Pro-social Behavior during their Free Activity Time

3&6岁幼儿自由活动时间亲社会行为性别差异研究

General loader activity time limit

通用装入程序活动时限

The forecasting of seismic damage becomes more important and urgent during the activity time of the earthquake.

地震灾害预测工作在新的地震活跃期中将更加重要和紧迫。

Therefore, it is necessary to consider the activity time variation in scheduling the cluster tools.

因此考虑活动时间波动时非常必要的。

In the afternoon after school is the soccer small community member's important activity time.

下午课余时间是足球小群体成员重要的活动时间。

Studies on The Estimation of Activity Time in PERT

PERT工序时间估计的一些研究

Make morning time your activity time.

让早上成为你的活跃时间。

Activity time has daily characteristic of taking and becoming a regular practice;

活动时间具有日常化和经常化的特点；

For these studies, the activity time variation is not considered.

但是，这些研究是没有考虑活动时间波动的。