第一家工厂将生产高科技工程塑料产品--杜力顿(Durethan)和保根(Pocan),由朗盛半结晶产品业务部负责运营。这两种产品主要应用于汽车行业,能减轻汽车自身重量,提升节能性。
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本文通过保角变换研究了垂直带状线中等位线的特性,结果表明其中有一根非常近似于圆的等位线。
The characteristic impedance of unscreened slab-line is obtained, based on the investigation of the properties of the equipotential line in vertical stripline.
碾压处理区白根、黄根数量多,平均总根量大于对照区,说明碾压后土壤具有较好的保水保肥能力,有利于根系生长发育;
Roots developing and activity: The amount of white roots and yellow roots and the average gross roots are more in the pressed area compared to the traditional area.
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