松弛

The convert efficiency of the catalyst declined 10% in first two years and then it is 2% after another two years,when it is used interruptedly.

目前用于该工艺中相转移的关键材料———疏水催化剂主要集中在Pt-C-PTFE[1~3]和Pt-SDB[4，5]两类疏水催化剂上，且大部分都已形成了各自的研制专利。

Based on the analyses of bio-markers and geochemical data, the abundance of organic matter, the construction of biological source, sedimentary environment, maturity and the oil-generating potential of the source rocks in the lower Cretaceous Duoba and Langshan formations in the Cuoqin basin have been studied.

应用生物标志物分析技术，结合其它地化资料，对青藏高原措勤盆地下白垩统多巴组、郎山组烃源岩，进行了有机质的丰度、生源构成、沉积环境、成熟度及成油潜力等方面的初步研究。