... 含有链烯酰氧基羧酸 Alkenoyloxyalkanoic Acid 烯链 olefinic link 异戊间二烯型链烷烃 isoprenoid alkane ...
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DNA链按每次一个基本单元的速度缓慢通过,同时沿石墨烯面加上一个电压。
A voltage is applied along the graphene surface as DNA strands are passed slowly through the slit one base at a time.
既然富烯不显示环电流存在的迹象,所以质子的化学位移仍然发生在正常的链烯区。
Since fulvenes show no evidence of ring currents, the chemical shifts of the protons will be found in the normal definite region.
首先以茄尼醇合成全反式侧链四十碳十烯-1-醇,再和2,3-二甲氧基-5-甲基-1,4-苯醌的还原产物在无水氯化锌存在下缩合。
All - E long chain part was synthesized from solanesol, then condensed with the reductive product of 2,3 - dimethoxy - 5 - methyl -1,4- benzoquinone in the presence of dry ZnCl2.
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