1)  spatial-temporal distribution
空时分布
1.
In order to make a better simulation of the power spatial-temporal distribution in cellular environments,two concepts with definite physical meanings,namely "effective scatterer" and "reflecting probability",are introduced to propose an enhanced simulation algorithm based on the Geometrically Based Single Bounce Elliptical Mo-del (GBSBEM).
为更好地对蜂窝环境下的功率空时分布进行仿真,引入“有效散射体”和“反射概率”两个有明确物理意义的概念,在单反射椭圆模型(GBSBEM)的基础上提出一种改进的仿真算法。
2)  distribution prediction of spaces and times
空时分布预测
3)  space-time distribution signals
空时分布式信号
4)  space-time
空时
1.
In this paper the performances of differential space-time unitary group code is simulated on slow Rayleigh fading channel in MATLAB on the basis of introducing the principle of differential space-time unitary group code,and compared with STBC of perfect channel estimates under same channel conditions.
首先介绍了差分空时酉群码的编译码原理,在此基础上,在MATLAB中对瑞利慢衰落信道下的差分空时酉群码的性能进行了仿真,并与相同信道条件下具有理想信道估计的空时分组码的性能进行了比较,仿真和分析结论表明了差分空时码的优越性。
5)  residence time
空时
6)  rate of non-occupied time
空时得率
1.
A soft-sensing on the rate of non-occupied time and catalyzer selection of process of synthetic acid ethene in a refinery was studied.
以某石化厂乙烯气相法合成醋酸乙烯反应过程的空时得率和催化剂选择性软测量建模为研究对象,基于现场采集数据及机理分析,确定了辅助变量。
参考词条
补充资料：空时
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性质：又称接触时间或空(间)时(间)。指反应物单程通过催化剂床层(或反应器有效体积)所需经历的时间。它是空(间)速(度)的倒数，其表示式为：τ=V催/V，τ为停留时间，V催为催化剂填装体积，V为反应物气体体积(标准状态)流速。

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