综述了双桥连二环戊二烯基金属有机化合物的研究进展。
The progress on the study of doubly bridged bis(cyclopentadienyl) metal complexes is reviewed.
综述了双桥连二环戊二烯基金属有机化合物的研究进展。
The progress on the study of doubly bridged bis (cyclopentadienyl) metal complexes is reviewed.
前者是塑料的普通成分，后者则是研究者的专利秘密，可使二环戊二烯变硬。
The material relies on two substances: liquid dicyclopentadiene, a common ingredient of plastics, and a catalyst (the researchers 'proprietary secret) that causes dicyclopentadiene to harden.
用二环戊二烯，顺丁烯二酸和乙二醇合成不饱和聚酯，这种不饱和聚酯既可浇铸，也可以在空气中固化。
An unsaturated polyester resin was synthesized from dicyclopentadiene, maleic acid and ethylene glycol. This resin can be moulded by casting and also can be hardened in air.
用二环戊二烯，顺丁烯二酸和乙二醇合成不饱和聚酯，这种不饱和聚酯既可浇铸，也可以在空气中固化。
An unsaturated polyester resin was synthesized from dicyclopentadiene maleic acid and ethylene glycol. this resin can be moulded by casting and also can be hardened in air.
用二环戊二烯，顺丁烯二酸和乙二醇合成不饱和聚酯，这种不饱和聚酯既可浇铸，也可以在空气中固化。
An unsaturated polyester resin was synthesized from dicyclopentadiene maleic acid and ethylene glycol. this resin can be moulded by casting and also can be hardened in air.
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