The red shift of C-O-C stretching vibration frequencies of IR reveals that the coordination interaction may take place.
配位体的C - O - C红外伸缩振动频率向红移,提供了两者发生配位的迹象。
About the mechanism of adjusting crossbeam balance, the three-phase blend stepping motor take the place of the A. C. motors, the coder as a feedback device, then make up of a closed-loop system.
调平机构部分,用三相混合式步进电机替代原有的交流电机,位置反馈部分,用编码器替代高精度电位器,这样构成了一个半闭环系统。
The work will take place primarily in Washington, D. c.
这些工作将主要在华盛顿特区进行。
The work will take place primarily in Washington, D. c.
这些工作将主要在华盛顿特区进行。
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