1) gravel covered
砾石覆盖
1.
The test was made in soil and water conservation monitoring center in 2007,based on flowerpot nature evaporation,the evaporation effect under five different size gravel covered was studied.
2007年在水利部水土保持监测中心采用花盆整体称重法,对5种不同粒径砾石覆盖下的土壤水分蒸发效应进行了研究。
2) stone coverage
石砾覆盖
3) gravel coverage
砾石覆盖度
1.
We report here the wind tunnel results of systematic tests of the aerodynamic roughness lengths of different gravel size and gravel coverage beds at various free\|stream wind velocities.
通过砾石床面的空气动力学粗糙度(Z0)的风洞实验研究,结果表明,砾石床面的空气动力学粗糙度(Z0)与砾石粒径、砾石覆盖度和自由风速有关,Bagnold的1/30定律和其它有关空气动力学粗糙度与粗糙元高度的固定比例对砾石床面都不适用。
4) gravel coverage
砾石覆盖率
5) grit and gravel overburden layer
沙砾石覆盖层
6) deep overburden gravel layer
深覆盖厚卵砾石层
1.
Fast drilling technology on deep overburden gravel layer in treatment of coal gob area;
采空区治理工程中深覆盖厚卵砾石层钻进施工
补充资料：石砾
1.石块和沙砾。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条