Once the carving is complete, he will often apply a black wash to enhance the features and then seal the entire book with acrylic to preserve the work.
一旦雕刻完成，他往往会使用黑色洗剂来突出特征，然后用丙烯酸定型整个电话簿以保存作品。
The seal must provide superior oil inclusion functions as well as being able to exclude foreign materials from the bearing chamber, even during wash-down.
全句的意思应该为：该密封必须有较优的油封功能，即使是在冲洗时，也要能够防止异物通过倒角侵入。
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