calcareous hardpan是什么意思

网络释义

1)calcareous hardpan,石灰性硬磐2)lime pan,石灰硬磐3)hydraulic lime,水硬性石灰4)air hardening lime,气硬石灰;气硬性石灰5)calciorthid,石灰磐旱成土6)calciustoll,石灰磐干软土