You'd better roughen the surface before applying the paint.
你最好先把表面弄毛糙再涂颜料。
These ingredients can cause bleeding under the nails, discolouration and can roughen the smooth texture of the nails.
这些成分可引起指甲下出血，变色，甚至使原本质地光滑的指甲变得粗糙。
Then, it removes dead surface skin that can dry, roughen and dull your complexion.
去除皮肤表层导致皮肤干燥、粗糙和晦暗的死皮细胞。
If maximum recoat interval is exceeded, roughen the film surface to ensure the adhesion between layers.
如超过最大重涂间隔，须磨粗表面，以确保漆膜间的附着力。
A mini-sized sand-blasting gun of ejection-and absorption type, used to clean and roughen the metallic surfaces for thermal spraying.
一种小型的射吸式喷砂枪，可用作喷涂喷焊前的表面清洁毛化处理。
The results show that the two-step method can effectively remove Co on the cemented carbide substrates and obviously roughen the surface of the cemented carbide substrate.
研究表明，两步混合处理法不仅可以有效的去除硬质合金基体表面的钴，而且，还可显著粗化硬质合金衬底。
Roughen the surface before applying the paint.
先把表面弄毛糙再涂颜料。
Roughen the surface before applying the paint.
先把表面弄毛糙再涂颜料。
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