xià céng lín
灰色实心点代表林冠层树种， 灰色空心点代表亚林层树种， 黑色点代表林下层树种。
The gray solid points, the gray hollow points, and the black points indicate the canopy, subcanopy, and understory species, respectively.
下层弹簧也采用斯林百兰的袋装连锁睡姿弹簧系统，按照人体体重的分布，可吸收身体每一次转动引起的微小震动。
The lower layer of the Slumberland Posture Springing System is flexible to absorb every body movement while accommodating each small change in overall weight distribution.
分别采制上述不同土壤类型或林型下的土壤表层和表下层的原状土祥，制取土壤薄片，进行土壤微形态学比较研究。
Undisturbed soils samples obtained from surface and subsurface soil layers under different forests were used to make thin sections and study micro-morphological characteristics.
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