批发O型圈AS568-384内365.63*354.97*5.33 一、主要产品: O型密封圈特种橡胶也称特种合成橡胶。指具有特殊性能和特殊用途能适应苛刻条件下使用的合成橡胶。如耐300℃高温,耐强侵蚀,耐臭氧、光、天候、辐射和耐油的氟橡胶;耐-100℃低温和300℃高温,对温度依赖性小、具有低黏流活化能和生理惰性的硅橡胶;耐热、耐溶...
Soil chemical and physical properties as indicators of sustainable land management under sugar cane in Papua New Guinea The sustainability of land management was assessed for a sugar cane plantation using soil chemical and physical properties as indicators. The plantation (6... AE Hartemink - 《...