They sustained this dense settlement through raised field agriculture, a technique that improved drainage and recycled nutrients in the poor tropical soil.
高地农业技术可以改善贫瘠的热带土壤的排水和养分的循环利用。
Some of these efforts include energy efficiency, new drainage systems, and improved transportation infrastructure.
这些努力包括能源效率、新的排水系统以及改进的交通基础设施。
The water quality of the Beitang Drainage River during these seasons was evaluated by the improved principal component analysis method and Nemerow index method.
运用内梅罗指数法验证了改进的主成分分析法的结论，并得出了三个水期的相对污染程度。
Methods (1)To compare the drainage speed of the improved EV needle and percutaneous transhepatic catheterizde drainage(PTCD) case needle in water and anti coagulation pigs blood.
方法（1）改良注入穿刺（EV）针与经皮肝穿刺胆道置管引流（PTCD）套管针在纯水和抗凝猪血中引流速度的比较。
Methods Clinical data of 19 cases of chronic subdural hematoma treated by improved burr hole and sealed drainage were retrospectively analyzed.
方法回顾性分析改进单孔闭式引流术治疗的19例慢性硬膜下血肿患者临床资料。
Methods 43 patients with chronic subdural hematomas were treated by the improved minimally invasive surgery of drainage.
方法对43例慢性硬膜下血肿患者行改良微创钻孔冲洗引流术。
Conclusion an improved prognosis can be expected with early laparotomy and sufficient decompression and drainage when ACS diagnosis established, particularly in the moderate and significant cases.
结论ACS一旦确诊，尤其是中、重度患者应早期开腹，充分减压引流，才可望改善预后。
The strength of soil can be improved by dissipating the pore water pressure by means of vacuum drainage preloading.
真空排水预压加固软基是通过孔隙水压力的消散来增强土体的强度。
While, birch has much faster drainage rate and highest solids content of the wet web, though its low retention properties need to be further improved.
相比之下，桦木浆具有较快的滤水速率和较高的湿部固含量，但其留着性能还有待改进。
Early recognition and immediate treatment with CSF drainage appeared to be the only intervention that had improved patients' survival.
早期识别错误并及时实施脑脊液脑室腰椎脑脊液灌注引流术可以提高患者的生存概率。
The water supply and drainage equipment in rural areas improved continuously, the housing conditions and hygienic facilities accessed the levels of urban areas.
农村居民给排水卫生设备不断完善，住房条件、卫生设施接近城镇居民。
This reservoir belong to weak water blocking type and the recovery efficiency can be improved greatly with water drainage gas production.
提出该气藏属弱水堵气藏，可用排水采气法大幅度提高采收率。
This reservoir belong to weak water blocking type and the recovery efficiency can be improved greatly with water drainage gas production.
提出该气藏属弱水堵气藏，可用排水采气法大幅度提高采收率。
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