native fiber 中文意思是什麼
native fiber
解釋
天然纖維-
After looking up a large amount of native and foreign information, the materials used in the experiment were as follows : ptfe base, graphite filler, molybdenum disulfide filler, copper powder filler, carbon fiber and so on. the experimental method is that the formula was designed according to uniform experimental method, the relationship between formula and frictional property was found with spline function and then the representative test points were chosen from fitting curve to make verification test for optimization. the preparative technique of solid lubricant is cold - press sintering method
經過查閱大量國內外文獻資料后確定原料為：聚四氟乙烯樹脂為基體，加入石墨、二硫化鉬、銅粉、碳纖維等填料；試驗方法為：根據均勻試驗方法設計配方，用樣條函數找出配方與摩擦性能的關系，然後在擬合曲線上選取具有代表性的試驗點進行驗證試驗，達到優化的目的；制備工藝：冷壓燒結法制備固體潤滑劑。 -
Canadian dogbane yielding a tough fiber used as cordage by native americans ; used in folk medicine for pain or inflammation in joints
北美的一種羅布麻屬植物，產生一種粗質纖維，過去常被美洲本地人用來編制繩索；有於民間醫藥治療關節疼痛或關節炎。 -
Through the investigation on the infiltration and cracking of concrete with addition of polypropylene fibers. the suitable addition of polypropylene fiber to minish the infiltration, crack and autoshrinkage of concrete was gained. the experiments indicate that polypropylene can minish concrete ' s infiltration, cracking and autoshrinkage, and the native fiber is more efficient than that made in brazil. all above proved that it is n ' t right that the finer the polypropylene fiber the better the performance of concrete
試驗結果表明聚丙烯纖維能有效改善混凝土的抗滲、抗裂性能並能有效減小混凝土的自收縮，國產聚丙烯纖維在減小混凝土的自收縮、改善混凝土的抗滲、抗裂性能方面更優于巴西聚丙烯纖維，說明了聚丙烯纖維改善混凝土性能並不是越細越好。
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