1)  Ring-opening polymerization
开环酯化
2)  open-loop
开环
1.
Generalized Open-loop Response Control of H_2/N_2 Ratio of Synthetic Ammonia;
合成氨氢氮比的广义开环响应控制
2.
The open-loop step driving theory and method of AC servo motor were studied.
研究了交流伺服电机开环步进运行的原理与具体实现方法,提出了一种PWM死区开环补偿方法,提高了步进状态下的电流幅值控制精度和步距均匀性。
3.
In combination with open-loop and outer-loop power control,the inner-loop power control under some conditions such as different channel environments and different control parameters has been simulated.
针对TD-SCDMA系统的特点,基于其系统中内环功率控制的方法,提出了一种基于线性预测参数的内环功率控制算法,结合开环、外环功率控制,对不同信道条件、不同控制输入参数的内环功率控制进行了仿真,结果表明,该算法可以适当补偿路径损耗和慢衰落,对系统性能的提高有一定的益处。
3)  Ring-opening
开环
1.
The techniques for aromatics saturation and ring-opening of cycloalkanes related to hydropyrolysis of aromatics into steamcracker feeds were reviewed and the feasibility of comprehensive utilization of surplus aromatics by this route was outlined.
分析了未来芳烃可能过剩的原因,综述了芳烃催化加氢裂解制备乙烯裂解原料相关的芳烃饱和技术以及环烷烃开环技术,指出利用该途径实现综合利用过剩芳烃的可行性。
4)  ring cleavage
开环
1.
The effect of methanol, formic acid and aqueous ammonia as nucleophiles on the ring cleavage of 1 was investigated.
8%文献值), 首次采用低碳液态醇实现 1 的开环反应, 产物为 FOX-7。
2.
The overall yield of nitration and ring cleavage was 19.
开环试剂为甲酸时,最优条件下两步反应(收率分别为20。
5)  ring opening
开环
1.
Its hydrogenation activity in aromatics saturation and ring opening activity were investigated.
芳烃加氢饱和及开环反应是一种提高柴油十六烷值的有效途径。
6)  open loop
开环
1.
In this method,the basic entities in a drawing are classified into open loop entities and closed loop entities,the line style can be identified automatically,and the width value of the line can be changed easily.
该方法将工程图形中的图线分成开环和闭环两种,并自动识别图线类型,智能调整图线宽度,避免了手工调整过程中存在的问题,提高了效率。
2.
This paper introduces high-speed DSP controller TM320F243 to modulate space vector pulse width with open loop control scheme, eventually successfully implementing the accurate speed and position control of the servo system.
空间矢量脉宽调制(SVPWM)技术是一种新型的脉宽调制技术,在异步电机和同步电机的控制应用场合中,已成为用于控制三相电压源逆变器非常流行的PWM技术,本文采用高速度的DSP控制器TMS320F243对空间矢量脉宽调制(SVPWM)进行开环控制,成功实现了对伺服系统的转速和位置的精确控制。
3.
This paper sorts tracker controller methodologies in utilization of solar energy into close loop, open loop, and hybrid.
对太阳能利用中的开环、闭环和混合控制跟踪控制方式的特点进行了分析。
参考词条
补充资料：环状碳酸酯低聚物开环聚合
分子式：
CAS号：

性质：简称开环聚合聚碳酸酯。系新近发展起来的合成超高分子量聚碳酸酯新工艺。它是先由双酚A与光气界面缩聚成双酚氯甲酸酯，再催化闭环成链节数n≈5～20的环状碳酸酯齐聚物，然后在催化剂存在下开环聚合，制得超高分子量线型聚碳酸酯(n≈50～1000)。可用以制得高强度薄膜或形状极为复杂的高性能模塑制品。且加工成型性好。也可用于制作高性能复合材料。

说明：补充资料仅用于学习参考，请勿用于其它任何用途。