Products are sold briskly , have very good economic benefits.
产品畅销不衰，有很好经济效益。
Result showed frequency conversion system application development prospects are very good and significant economic benefits.
结果表明变频调速系统具有很好的应用发展前景和可观的经济效益。
If they can be recovered and used to have very good economic and social benefits.
如果能加以回收和利用，就具有很好经济效益和社会效益。
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