The performance shows the new system greatly improves the efficiency of pearl surface perfection grading and cuts the cost down as well.
实践证明，该系统不但提高了珍珠光洁度的分选效率，而且节省了企业的生产成本。
The performance shows the new system greatly improves the efficiency of pearl surface perfection grading and cuts the cost down as well.
实践证明，该系统不但提高了珍珠光洁度的分选效率，而且节省了企业的生产成本。
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