During its operation in orbit, Tianzhou-2 carried out a series of extended application tests.

天舟二号在轨运行期间，进行了一系列扩展应用试验。

Although carbon dioxide is the more important greenhouse gas, methane measurements will be a more practical early application to test the market for this sort of data.

尽管二氧化碳是更为重要的温室气体，但测量甲烷含量作为一个早期应用方法对测试此类数据的市场价值有更实际的作用。