通过几年来的现场试验和推广应用，有效解决了大芦湖和小营油田的井筒结蜡和油层保护问题，提高了油井产量和经济效益。
The field applications of microbial wax prevention technology in Daluhu Oilfield and Xiaoying Oilfield show that the well wax deposition and oil bed protection problems were solved effectively.
结果表明，采用壮苗和密植是提高早期产量和经济效益的有效途径。
The result shows that the adoptation of vigourous seedling and dense planting is an effective way to raise the early yield for profits.
运用此模型及算法可以有效确定经济定货量和经济生产量，最大限度降低年生产费用。
The ordering quantity and production can be determined economically and effectively with this model to minimize the total annual cost.
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