单词 plagioclastic 释义 plagioclastic, a. Min.|-klstk|[f. plagio- + Gr. - broken, cloven + -ic.]Having oblique cleavage. Opp. to orthoclastic.1869Geikie in Edinb. Geol. Soc. Jrnl. II. 5 Plagioclastic felspars.1879Rutley Stud. Rocks x. 91 The plagioclasti...