They have also worked out, according to the rou's actual life, back up roll change regulation and compiled a data bank for back up roll service and maintenance.
又按照支承辊的实际使用寿命，制定了支承辊换辊制度，并编制了支承辊使用与维护管理数据库。
The actual show that the proposed all design scheme is practical, can improve a lot of car overall performance, prolong service life.
实际表明，本文提出的一切方案是切实可行的，可以对汽车整体性能提高很多，延长使用寿命。
The actual show that the proposed all design scheme is practical, can improve a lot of car overall performance, prolong service life.
实际表明，本文提出的一切方案是切实可行的，可以对汽车整体性能提高很多，延长使用寿命。
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