Permanence and Existence of Periodic Solutions of a Predator-Prey Patchy Model with Dispersal and Time Delay;
对一类在斑块环境下具有Beddington型功能性反应和时滞现象的非自治捕食系统进行了研究,证明系统在适当的条件下是永久持续生存的;利用重合度理论,得到了一组保证该系统存在正周期解的充分条件。
Q: Yet, the problem of permanency, of continuity of being, is not solved.
但、永久持续地存在这个问题仍未解决。
Permanence of a Predator-prey Model with Stage Structure;
一类阶段结构捕食系统的永久持续生存
On the contrary, happiness is a long lasting enduring enjoyment of life; it is being in love with living.
相反，幸福是一种对生命的永久持续的享受，一种对生活的爱。
It's a very interesting proverb. Nothing lasts forever, does it?
那是一句很有趣的成语。任何事物都不能永久持续下去，是不是？
Permanence of populations of a competing chemostat model in a polluted environment;
污染的竞争恒化器模型种群的永久持续生存性(Ⅱ)
Permanence for Two species Lotka Volterra Models with Harvest or Throw in;
具有收获与投放的二维Lotka-Volterra模型的永久持续生存
Permanence and Global Stability in a Predator-Prey System with Three Life Stages
具有3个成长阶段的捕食-被捕食模型的永久持续生存和全局稳定性
permanent failure
永久性故障（持续性故障）
Having lasting significance or worth; enduring.
历久不衰的，持续的有永久的意义或价值的；持久的
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。
a durable peace, friendship, settlement
持久的和平、 永恒的友谊、 永久的解决
Atrioventricular junction ablation combined with cardiac pacemaker implantation for elderly persistent rapid atrial arrhythmia
房室结消融加永久起搏器治疗老年人持续快速性房性心律失常
purchase in perpetuity
购买永久持有权年数
It would never endure.'
这种文明永远不能持久。”
store in a deepfreeze, as for conservation.
低温保存以便永久保持。
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