基本解释节理单元英汉例句双语例句At different growing stages of winter Se element distribution rate of leaf before jointing stage is higher than that of other above-ground organs.冬小麦不同生育期吸收硒的分配特点是：叶片分配比率在拔节前都高于同期其他地上器官；joint element更多例句专业释义动力与电气工程连接构件