infertile soil 中文意思是什麼
infertile soil
解釋
瘦地-
These measures include : rehabilitation of vegetation with preserving soil and water on the eroded infertile soils, the entrance to “ soil reservoir ” dredged by controlling with different eroded soil types, using “ soil reservoir ” of the upper reaches of the yangtze river bigger much more than the reservoir of the three gorges
充分調用「土壤水庫」實現長江流域防洪減災的措施應包括建立保土保水的地表植被系統，分類整治侵蝕劣地土壤，疏浚入滲「土壤水庫」的通道，以及重視調用一個比三峽水庫庫容大得多的「土壤水庫」 。 -
In the eroded infertile soils of the yangtze river watershed there was an obstacle to the use of “ soil reservoir ”, that is, the storage capacity of “ soil reservoir ” had been severely lost because of soil erosion
長江流域的侵蝕劣地「土壤水庫」需要承受更多的攔蓄雨水任務，但這些侵蝕劣地土壤區存在著調用「土壤水庫」的障礙。 -
Ten to twenty times more trees were reported in parts of southern niger in 2005 than there were 30 years earlier. some reclaimed land can now be farmed again. tha land became infertile during the 1970s and early 80s. but about 20 years ago, local farmers recognize that their onceproductive soil was being carried away by severe winds
在2005年大部分南部尼日地區的樹木比30年前的樹木多出了10到20倍的數量.一些開墾土地現在又可以被耕種了.那塊土地在70年代和早期的80年代變得開始不肥沃.但是大約20年之前，當地的農民意識到他們過去多產的土地正在被嚴峻的天氣所破壞 -
The farmers in this area have to struggle to wrest a living from the infertile soil
該地區的農民不得不在這塊貧瘠的土地上掙扎謀生。 -
Besides policy factors, five methods of cost - cutting of biodiesel are reviewed, including new raw material with higher oil content, shorter regeneration cycle, which is suitable for infertile soil and different climatic conditions ; heterogeneous catalysts ; new technologies ( e. g. supercritical methanol and ultrasonics ) ; higher added value utilization of by - product glycerin with simple method ( propylene oxide chloride, 1, 3 - propanediol, pyruvic alcohol etc. ) and moderate scale of production
摘要綜述了除政策因素外，降低生物柴油生產成本的5種方法：選擇含油率高、再生周期短、適應貧瘠土地及不同氣候條件的新型植物原料；研究新型固體催化劑；引入新工藝（超臨界法和超聲波法） ；使用比較簡便的方法將廢棄的甘油轉化為高附加值的產品（環氧氯丙烷、 1 ， 3 -丙二醇、丙酮醇等）以及適度生產規模等。
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