1) concave sequnce
凹序列
2) concavity of seguence
序列的凹性
3) concave order
凹序
1.
This article, based on the comparision of life variances under stochastic order?convex order?concave order and expectation ,studies the relatoins among these four comparisions in the detail.
论文基于寿命变量在随机序、凸序、凹序及均值下的比较 ,较详细的研究了这几种比较间的关系以及它们对串、并联系统和卷积运算的封闭性。
4) concave array
凹面阵列
5) increase concave ordering
增凹序
1.
It is shown that,under homogeneous Poisson shock model,the lives of components will increase in the sense of expectation ordering,reversed failure rate ordering,reversed mean residual life ordering,increase concave ordering and Laplace transform ordering if the number of shocks which cause the failure of the components increases in the sense of corresponding stochastic orderings.
证明元件寿命在齐次Poisson冲击模型中依期望序、反向失效率序、反向平均剩余寿命序、增凹序、Laplace变换序等增加的充分条件,是促使元件失效的随机冲击次数也依相应的随机序增加。
6) decreasing concave order
减凹序
1.
Based on the dependency of random variables in the sense of submodular ordering,the monotonicity of the number of customers of peak period during the waiting time is obtained,in the sense of decreasing concave ordering,of M(X)/G(Y)/1 on the dependency between the waiting time and the number of customers who come during the period.
讨论了单个服务员的M(X)/G(Y)/1排队模型在等待时间内高峰期的顾客人数,基于下模序刻画的随机变量相依程度,得到了M(X)/G(Y)/1在等待时间内高峰期顾客人数关于等待时间和在此等待时间内到达的顾客人数在减凹序下的单调性。
补充资料：凹模壁厚及凹模垫板尺寸
型腔壁部投影面积 壁 厚， 毫 米
F， 厘米2 h1 h2 h3 h4 h5
<5 15~20 30~40 <=10 15~20 30~40
>5~10 20~25 40~50 10~15 20~25 40~55
>10~50 20~30 50~60 15~20 20~30 55~65
>50~100 30~35 60~75 20~25 30~40 65~70
>100~200 35~40 75~85 25~30 40~50 70~75
>200 >40 >85 30~35 50~60 >80
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条