The effect of diffusion on the permanence of the population in a polluted patch is studied by setting up a single population diffusive system in two patches.
文中所考虑的是污染斑块上外界毒素的输入量存在极限值的情形 ,得到如下结论 :无扩散时 ,若此极限值超过某一定值 ,则污染斑块上的种群趋于灭绝 ;扩散存在且两斑块上种群的扩散系数满足一定的条件时 ,则可使该系统的种群永久生存或灭
The Effect of Diffusion on the Permanence of Smith Population in the Polluted Patch;
文中所考虑的是污染斑块上外界毒素的输入量存在极限值的情形,得到如下结论:无扩散时,若此极限值超过某一定值,则污染斑块上的种群趋于灭绝;扩散存在且两斑块上种群的扩散系数满足一定的条件时,则可使该系统的种群永久生存或灭绝。
(computer science) coded instructions that are stored permanently in read-only memory.
（计算机科学上）在只读存储器中永久存储的指令代码。
semipermanent electronic storage
半永久性电子式存储器
nonvolatile memory [ storage ]
固定[永久性]存储器
ROM：Read only memory; internal storage device in which information is permanent.
只读存储器：只读存储器；内部存储设备，信息是永久存在的。
Stores deleted items until you permanently remove them from your computer
存储已删除的项目(除非您永久删除)
FIRMWARE： A program permanently recorded, e.g., in ROM.
固件：永久记录程序，例如，只读存储器。
The Read Only Memory (ROM) or Programmable Read Only Memory (PROM) is used to store the programs permanently.
只读存储器（ROM）或可编程只读存储器（PROM）用来存放永久性程序。
A store whose streams have a longer lifetime than the applications that created them.
永久性存储：生命期超过创建他们的应用程序的存储。
A storage approach allowing direct information inquiry from temporary or permanent storage devices.
一种存储方法,它允许从暂时性或永久性存储设备中直接询问信息。
Do not permanently delete items until the store has been backed up
完成对存储的备份之后才永久删除项目
This operation will permanently erase all data on the storage device
此操作将永久清除存储设备中的所有数据
With respect to an (integrated circuit) readonly memory; to write (permanent) bit patterns to it.
对某个(集成电路)只读存储器而言,(永久性地)写入位模式。
To make a permanent or transient recording of data in a storage device or on a data medium.
将数据永久或暂时地记录到存储设备中或数据媒体上。
"Remote Storage files have been detected. If Remote Storage is removed, these files may be permanently lost.
"已检测到远程存储文件。如果远程存储被删除，这些文件将会永久消失。
quick-access form of permanent file
永久文件快速存取形式
permanent filing of working paper
工作底稿的永久存档
Books do not last forever.
图书不能永久保存。
store in a deepfreeze, as for conservation.
低温保存以便永久保持。
