在这些化合物里, 环戊二烯环只有4个氢.In there compounds, the cyclopentadiene ring has only four hydrogens.其他类异戊二稀则分泌到细胞外间隙中.Other isoprenoids are excreted into the extracellular space.通过合成双环戊二烯型不饱和聚酯树脂, 制备出一种新形石材专用胶粘剂.By synthesizing DCP...