中等的

Apply by coal of ecumenic serous thickness.

等难度成浆的煤种。

Aplitic varieties are the rule, with the grain size ranging from medium to pegmatitic.

长英质的变种照例具有等至伟晶的粒度。

In a middling rainfall condition, calcium eluviate and movement in uprightness direction.

等程度的降雨条件下,钙土壤垂直方向上发生淋溶迁转化。

The microsporidian had a medium oral infectivity and low transovarian transmission to sillworm, Bombyx mori.

对家蚕有等程度的感染能力，经卵传染频率较低.

During air combat training his two seater F-15 was involved in a mid air collision with an A-4 Skyhawk.

训练的过程他的双座F-15和架A-4天鹰发生了等程度的碰撞。