Comments: Although these valves are the best available, they still require trained operators and good procedures to provide maximum benefit.
评论：尽管这些阀门是现有最好的，它们仍然要求经过训练的操作员和良好的程序来发挥最大的作用。
We hope that through this research will give the managers, operators and mineral resource development in the use of mineral resources beneficiaries make some constructive comments and Suggestions.
希望通过本文的研究成果，能给有关管理者、矿产资源的开发经营者以及矿产资源的使用受益者，提出一些建设性的意见和建议。
We hope that through this research will give the managers, operators and mineral resource development in the use of mineral resources beneficiaries make some constructive comments and Suggestions.
希望通过本文的研究成果，能给有关管理者、矿产资源的开发经营者以及矿产资源的使用受益者，提出一些建设性的意见和建议。
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