impeller balance grade 叶轮平衡等级
balance quality grade 转子平衡等级
grade of balance 平衡度
balance accuracy grade 平衡精度等级
balance precision grade 平衡精度等级
high grade balance 高位均衡
energy grade balance 能级平衡
This paper suggests that mining enterprises have to utilize the economic grade which relies on the balance of revenue and expenditure from the view point of maximum utilization of mineral resources.
本文从充分利用矿产资源的角度出发，认为矿山企业运用收支平衡经济品位势在必行。
It is proved that balance can reduce much out-of-gauge grade and exceptional length value of uneven freights.
经验证，配重的确能大幅度降低不均匀货物的超限等级和超长额度。
The giant salamander is a second-grade animal under state protection. Research on the animal is of great biological significance to protecting rare animals and keeping an ecological balance.
大鲵是国家二级保护动物，对大鲵进行研究在保护珍稀动物和保持生态平衡方面具有重要的生物学意义。
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