chemical activity and stability的意思|示意

The results show this catalyst has high catalytic activity, good chemical stability, good repeatability and little waste discharged.

结果表明，该催化剂催化活性高，化学稳定性好，重复使用性能佳，无环境污染。

However, due to the chemical stability of propane and the activity of acrolein, this reaction required a multiple functional catalyst and no great progress was made in this field.

但由于丙烷的稳定性和丙烯醛的活泼性，该反应对催化剂的要求苛刻，有关的研究并未取得重大的突破。

The test showed that, the acid phosphite with high chemical activity has excellent extreme-pressure anti-wear property but heat oxidation stability, anti-corrosion and anti-rust properties are poor;

试验说明化学活性很高的酸性亚磷酸酯有很好的极压抗磨性，但热氧化安定性、抗腐蚀性、防锈性不好；