1、The herbicidal activity on dicotyledon weeds is better than on monocotyledon weeds.
對(duì)雙子葉雜草的活性明顯優(yōu)于對(duì)單子葉雜草的活性。

2、The characteristics of the flora and resources of monocotyledon in Guangxi
廣西單子葉植物區(qū)系及資源特點(diǎn)

3、In angiosperms there are 475 species of monocotyledon and 567 species of dicotyledon.
被子植物中單子葉植物475種，雙子葉植物567種。

monocotyledon翻譯