封层 meaning in English

blinding course
seacoat
seal coats

Specification for construction of slurry sealing of road face
路面烯浆封层施工规程
A new modifier for asphalt waterproof material
聚合物改性乳化沥青稀浆封层的试验研究
Moulding theory and compaction technology of slurry seal road surface
稀浆封层路面成型机理与压实工艺
Study of performances of rubber - powder modified asphalt mixture for slurry seal
橡胶粉改性沥青混合料稀浆封层的性能研究
Slurry sealing machine
稀浆封层机

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