Microstructure evolution and fractographs of DZ621 nickel-base superalloy during stress rupture test in 1100℃/60MPa was investigated by SEM.
本文用扫描电镜研究了DZ621镍基高温合金在1100℃/60MPa持久过程中的组织变化及其断裂后的断口形貌。
The stress rupture equation with high reliability is an important basis in the design of the mechanism working in high temperature environment.
高可靠度的蠕变持久方程是高温机械设备设计和寿命评估的重要依据 ,但是 ,根据现行方法得出的蠕变持久可靠性方程无法满足预定的置信度和可靠度的要求 ,导致其预测的蠕变持久强度和使用寿命过大 ,使高温机械在实际使用中偏于危险。
Long tempering time may promote the precipitation of Laves phase during low-stress rupture.
研究了不同回火时间对T91钢625°C下持久性能及形变前后组织的影响。
The author put forward a new kind of lasting foamed hair dye colorant -hair dye mousse, this new kind of colorant can dye, finalize, nurse and beautify hair.
综合染发剂美发和摩丝护发、定型的特点,针对目前一般染发剂的不足,研制开发出一种具有染发 及头发定型、护理多重功能的新型泡沫状持久性染发剂——染发摩丝,并对染发摩丝的主要原料、配方选择、 制备工艺等作了研究。
We discuss persistence, and existence and global stability of nonnegative equilibria for the system.
讨论了系统的持久性，非负平衡点的存在性和全局稳定性，获得了系统持久与一致持久的条件。
Permanence for n-species Predator-prey Discrete Chain Systems of Lotka-Volteera Type;
n种群Lotka-Volterra离散捕食链型系统的持久性
Permanence and Asymptotic Behavior of the Nonauto-nomous Lotka-Valterra Competitive System with Impulses
具有脉冲效应的非自治Lotka-Valterra竞争系统的持久性和渐近行为(英文)
We first correct a predaor-prey model proposed by Lin Guojian and Hong Yiguang[1],after that,by applying the comparison theorem of differential equation,a set of sufficient condition is obtained which ensure the permanence of the system,we also investigate the extinction of the predator species.
首先修正了文[1]提出的一类三种群功能性反应捕食-食饵模型,其后利用微分方程比较原理得到了一组保证该系统的持久性以及捕食者种群的绝灭性的充分性条件。
not permanent; not lasting.
非永久的，不持久的。
continue to live, endure or last.
继续活着，持久或者持续。
duration:Continuance or persistence in time.
"持续,持久:时间上的连续或持续."
Continuance or persistence in time.
持续，持久时间上的连续或持续
endurance strength
耐久限度, 持久力, 疲劳强度
a durable peace, friendship, settlement
持久的和平、 永恒的友谊、 永久的解决
be persistent, refuse to stop.
持久稳固，拒绝停止。
He couldn't sustain his interest.
他的兴趣不能持久。
high temperature lasting tester
高温持久强度试验机
Bio-degradable, non-persistent wastes
生物降解、非持久性废物
He never sticks to anything for very long.
他做任何事总不能持久。
He makes good resolutions, only he never keeps them.
他决心虽好，但不能持久。
Will Jim last out in his new job?
吉姆的新工作会持久吗?
for continuing moisture and a beautiful silky-fresh look
持久保湿、幼滑如丝
It would never endure.'
这种文明永远不能持久。”
persistently ask for overdue payment.
持久地寻找逾期贷款。
There is no stay in your native.
本地人没有持久性。
a lasting effect, interest, relationship
持久的效力、 兴趣、 关系