explicit adj. 1.明白的,明确的 (opp. implicit). 2.直爽的,不隐讳的。 3.显然可见的。 4.(租金等)须直接付款的。 explicit definition 【数学】显定义。 explicit cost 直接以货币支付的成本。 explicit function 【数学】显函数。 an explicit statement 明确的声明。 explicit faith [belief] 彻底了解教义后的明确的信仰。 be explicit in one's statement 率直陈述。 adv. -ly ,-ness n.
constraint n. 1.强迫,拘束。 2.约束,压抑,拘泥。 3.强制力。 4.紧张感[状态]。 by constraint 勉强,强迫。 feel constraint觉得局促不安,感受压迫。 show constraint显得局促。 under [in] constraint 被迫,不得不;被束缚着。
The optimal model of truss structure is established , in which the cross sectional areas of bar are taken as design variables , the structure weight is taken as objective function . in the process , the reliability of structural displacement and bar stress and the fundamental frequency are taken as constraint functions . from the engineering practice , all the reliability constraints , which are implicit generally with the design variables , are equalized and transferred to the conventional explicit constraints 本文将主要考虑桁架结构的优化问题,首先建立数学模型,即以桁架的横截面积为设计变量、以重量最小为优化目标,位移、应力等可靠性及基频为约束条件;最后,从工程实际出发,对结构系统的可靠性隐形约束进行等价显化处理,使之转化为常规的横截面积优化问题。