经过多年试验研制而成的绿色高科技产品。
经过多年试验，研究者已在治疗黑色素瘤，肺癌和血癌方面取得进展。
After decades of trying, researchers have made progress against melanoma, lung cancer and leukaemia.
经过多年试验表明，采取对插穗进行催芽处理等一系列育苗技术措施，可使新疆杨硬枝扦插成活率提高到80%-95%。
After many-year experiments, the result show that bud forcing treatment can increase the survival ratio of Populus bolleana with cuttage by hard branch up to 80%-95%.
最终，经过多年的试验，目录公司以烦恼结局：这种网站无法成功。
Finally, after years of experimentation, content companies came to a disturbing conclusion: The Web did not work.
经过多年的调查和改造试验，得出了能被广大农民所接受而且适应性强的有关技术措施，对指导毛竹低产林改造具有现实意义。
After years' research and reforming experiment, provide technical measures that are widely accepted and have strong adoptions, which make real meaning to reform the low productive bamboo forest.
经过多年的室内研究及矿场试验攻关，大庆油田已先后成功地进行了5个三元复合驱矿场试验。
After dozens of years of laboratory study and pilot test, 5 ASP flooding pilot tests have been successfully performed in Daqing Oil Field.
经过多年的室内研究及矿场试验攻关，大庆油田已先后成功地进行了5个三元复合驱矿场试验。
After dozens of years of laboratory study and pilot test, 5 ASP flooding pilot tests have been successfully performed in Daqing Oil Field.
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