经过开环、光气化、缩合等一系列反应制备了苯磺隆。
Tribenuron-methyl is synthesized via ring-opening reaction, phosgenation and condensation.
控制可以是闭环的也可以是开环的。
图7…几种阳离子开环聚合的单体。
Figure 7... Several monomers for cationic ring... opening polymerization.
利用微机对纵进给系统进行开环控制。
设计成功实现了步进电机的开环控制。
The design succeeds in realizing open-loop control of step-motor.
对开环反应机理进行了探讨。
它不仅具有开环指令，还具有闭环指令。
图37.1是对开环控制系统的一般性表示。
Fig. 37.1 is a general representation of an open-loop control system.
人类的本质正是如此，没有人能够避开环境的影响。
Such is human nature, that we can't avoid being influenced by environment.
抑或立即在心境上挣开环境的束缚，获得追求成功的自由？
Or do you want to break through the rein of the environment to pursue the freedom for success?
位同步检测是实现全数字接收机开环定时恢复的关键技术。
The bit synchronization detect is very important in opened loop timing recovery of all digital receivers.
严禁将涉密项目在公开环境下使用，特别是在互联网上使用。
Prohibited items will be classified in an open environment, use of, especially in the Internet.
建立在开环系统上的传统制动性能概念导致人力物力的浪费。
The traditional braking performance based on open-loop concept has caused a series of problems which lead to immense waste of manpower and material.
由于二次调节的开环不稳定特性，必须为其设置自动调节系统。
Automatic regulation must be added owing to the unstable characteristics of the open loop secondary system.
当音量调节操作时，则在开环形式下完成默认音量的采样更新。
While volume adjusting is evoked, default volume is collected under the mode of open loop control.
然而，这一优点比不上开环控制的缺点和反馈系统的固有优点。
However, this advantage is more than outweighed by the disadvantages of open-loop control and the inherent advantages of feedback systems.
早期通用变频器大多为开环恒压比的控制方式，控制曲线不稳定。
The adopted control mode of previous common frequency converter is usually of open loop constant voltage ratio, which its control curve is not stable.
步进电机是将电脉冲信号转变为角位移或线位移的开环控制元件。
Electrical power pulse signal will be entered into angular displacement or displacement of the Central Line control components.
聚乳酸的合成方法主要有两种：乳酸直接聚合和丙交酯开环聚合。
Polylactic acid synthesis in two major ways:direct polymerization and lactate lactide ring-opening polymerization.
一个无反馈的开环（直接）系统直接产生对于输入信号的输出响应。
An open-loop (direct) system operates without feedback and directly generates the output in response to an input signal.
试验结果表明，高温条件下，咪唑啉发生开环反应，生成了酰胺类物质。
Results showed that imidazoline was hydrolyzed to amide by ring opening reaction under high temperature.
通过各种阶跃输入下的开环响应试验，对烘干过程的动态特性作了调研。
The dynamics of drying process is investigated by step change response in a open-loop.
在开环供应链中回收主体有生产者责任组织(PRO)、第三方生产商。
In the opened-loop supply chain, there are new participants: producer responsibility organization (pro) and the third manufacturers.
为此，应用PID控制的怠速实验结果与开环怠速控制的实验结果进行了对比。
The chapter compares PID control's idle test result with open loop's idle control test.
多形态计划的目标是创建一种从静态开环转移到反应式闭环任务算法、应用软件和硬件的范例。
The goal of the polymorphous initiative was to "institute a paradigm shift from static open loop to reactive closed-loop mission algorithms, application software, and hardware implementation."
在对AGV的定位轨迹控制方法上，选定了位姿开环控制与闭环控制相结合的方式。
Opened and closed loop control was chosen to control method of the motion track of AGV to its position and orientation.
方法采用匹配设计方法，通过匹配条件，使开环系统与闭环系统的动力学方程匹配。
By the matching design method, the dynamical equations of dosed loop system can match those of the open loop system.
开环迭代学习控制学习周期长，在迭代学习的初期容易出现不稳定和高增益的现象。
But the learning period of opened-loop iterative learning control is long, and the unstable and high gain phenomena may be taken place during the initial stage of iterative learning control.
本文应用叠加原理分析运算放大器的开环输入电阻对反相比例放大运算精度的影响。
This paper analyses operation accuracy that is influenced by the open input resistance of operation amplifier by means of superposition theorem.
本文应用叠加原理分析运算放大器的开环输入电阻对反相比例放大运算精度的影响。
This paper analyses operation accuracy that is influenced by the open input resistance of operation amplifier by means of superposition theorem.
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