模拟电路实验证明用两个同极性的晶体管以多种电路接法都能获得具有S型负阻特性的两端器件。
The experimental results of analogue circuit show that type-S negative resistance can be obtained by using two like polarity transistors with various circuit connections.
本论文研究目标是在常规阴离子聚合方法合成sbs的基础上，通过端基转化实现了SBS与极性单体共聚。
Based on the general synthesis of SBS by anionic polymerization mechanism, we have carried out the copolymerization of SBS with several polar monomers by conversion of end-group of SBS.
这样就可以断定开路导体两端的极性。
The polarity of the ends of the open - circuit conductor may then be deduced.
使用时请注意区分输入端与输出端，以及输出端的正负极性，核对无误后才能通电；
Before connecting this unit, please make sure that the input and output terminal, and the positive and negative polarities of output terminal are on the right position respectively.
使用时请注意区分输入端与输出端，以及输出端的正负极性，核对无误后才能通电；
Before connecting this unit, please make sure that the input and output terminal, and the positive and negative polarities of output terminal are on the right position respectively.
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