共进行了3种类型的试验：室内性能测试、在联合收割机上的联机调试和田间试验。

There were 3 kinds of tests, including laboratory test, combine harvester test and field test.

youdao

共进行了3种类型的试验：室内性能测试、在联合收割机上的联机调试和田间试验。

There were 3 kinds of tests, including laboratory test, combine harvester test and field test.

youdao