During the replication and transcription, DNA unwinds the double helix under the control of an enzyme. It is a very complex process beyond a physical description.
DNA双螺旋链在复制和转录的过程中要在酶的催化下解旋，这是一个高度复杂的过程，目前还无法用物理学的方法来描述。
A description is given of the renovation principle and scope of the control system for the SBR effluent treatment process.
阐述了SBR废水处理工艺控制系统改造原理和改造内容。
Using the parametric programming language APDL, introducing parametric variables, the judge and circulation flow control command, detailing description of steps parameter module development process.
运用参数化程序设计语言APDL，引入参数化变量，和判断、循环等流程控制命令，详细说明了梯级参数化模块的开发过程。
It is the precondition of process design and optimum control that exact and quantificational description of the gasification process in the fixed bed gasification.
对其气化过程进行精确的定量描述是过程设计与控制最优化的先决条件。
This article discusses the hybrid system model of each layer and gives a detail description for the process layer. Petri net approaches are presented to model chemical control hybrid system.
论文分别讨论了各层混杂系统的模型形式，特别对过程控制层混杂系统模型进行了详细的描述。
This article discusses the hybrid system model of each layer and gives a detail description for the process layer. Petri net approaches are presented to model chemical control hybrid system.
论文分别讨论了各层混杂系统的模型形式，特别对过程控制层混杂系统模型进行了详细的描述。
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