破坏性小的耕作法叫做“带状耕作”,因为仅仅耕一条条很浅的条块,而不是整块土地。
The less-disruptive system is called “strip tillage” because only narrow bands of soil are tilled instead of the entire field.
在小西沟、关门山两工业矿段的条带状白云岩铅、锌含量明显高于其它地区。
Lead and zinc contents is higher evidently in striped dolomite of industrial ore-member in Xiaoxigou, Guanmenshan than other areas.
最近,有些人试图研制多晶硅和带状硅,这些材料比高质单晶硅成本小,但是,迄今为止,这些成本明显小的材料的效能低得不实用。
Recently, there have been some imaginative attempts to make polycrystalline and ribbon silicon which are lower in cost than high-quality single crystals;
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