不定: indefinite; indeterminate应力: stress; strain; tension; cha ...不稳定应力: i tability stre; instability stress静定应力: statically determinate stress定应力伸长率: elongation at given stress恒定应力试验: constant stress test特定应力循环: specified stress cycle光弹性确定应力法: photo-elastic method of stressdetermination恒定应力型试验机: constant stress type tester恒定应力下的拉伸蠕变: constant-stress tensile creep恒定应力寿命试验和加速寿命试验方法总则: constant stress life tests and acceleration life tests-general rules不定: 1.(表示不肯定) indefinite; indeterminate 我明天还不定来不来呢。 it's not at all certain whether i'll come tomorrow. 他一天不定来多少次。 i don't know how many times he comes a day. 事情还不定怎样呢。 it's hard to predict how things will turn out.2.(不稳定) unsteady; drifting; fitful 方向不定的风 a fitful wind; 漂泊不定 drifting from place to place; 心神不定 unsteady in mind; 不定代词 [语言学] indefinite article; 不定冠词 [语言学] indefinite article; 不定式 [数学] indeterminate form; [语言学] infinitive; 不定收入 transitory income否定应答: nak negative acknowledge; negative acknowledge规定应捌照: nytt恒定应变法: constant-strain method肯定应答: affirmative acknowledgement; affirmativeacknowledgement; positive acknowledgement限定应答: restricted response预定应到的: due约定应付款: contract payable应力: [物理学] stress; strain; tension; charge 内应力 internal stress; 预应力 prestress; 正应力 direct stress; 冲击应力 impact stress; 交变应力 alternate stress; 工程师们计算桥梁的应变和应力。 engineers calculate the strains and stresses on a bridge 不定式;不定的: infinitive否定应答信号: nak negative acknowledgement; negative acknowledgement核定应付债款: audited claims payable恒定应变试验: constant strain test肯定应答, 正响应: positive response