" in terms of caloric expenditures 支出 ； 消费 , time is more important than intensity 强烈 ； 极度 , " says otto . and the average person cannot sprint 疾 跑 or pedal at a high intensity for very long "就热量消耗而言，时间比强度更重要， "奥托这样说。并且一般人不能做到长时间高强度地快跑或蹬车。
Titanium and titanium alloys have excellent specific strength and corrosion resisting property , and have important role in application in astronavigation facility , navigation facility , chemical industry and oil industry 摘要钛及钛合金具有优良的比强度和耐蚀性，在航天航空及石油化工行业中起著重要作用。
Composites have many advantages such as high specific strength and specific modulus , good corrosion resistibility and vibration absorptivity , and etc . so their proportion in the field of modern materials increases 复合材料,因其比强度高、比模量大、耐腐蚀、减震性好等优点,在现代材料领域所占比重越来越大。
It is realized that with the increase of mineral additives content the strength coefficient of cement and the contribution of pozzuolana effects to the concrete by the mineral additives is obviously increased 试验中发现，随着掺和料掺量的增加，水泥自身抗压比强度和掺和料火山灰效应对混凝土强度的贡献率都明显增加。
Gmt has high specific strength as well as excellent impact strength and can be made into large size complex component by compression molding . it has broad applications in automobile industry Gmt的比强度高，抗冲击性优异；采用压缩模塑工艺， gmt片材可以制造尺寸大、稳定性好、形状复杂的部件，在汽车制造上有广泛的应用前景。
Aluminum based metal matrix composite ( al mmcs ) materials with sic particle reinforced as excellent capability engineering materials have high strength , good wear resistance , excellent elevated temperature , high stiffness 碳化硅颗粒增强铝基复合材料作为性能优良的新一代工程结构材料，具有高比强度、比模量、耐高温、耐腐蚀等一系列的优点。
Frp is a kind of composit materials which has high specific intensity high specific rigi low density excellent corrsion - resistance . in the fierce market competition , the emphasis of technic are focused on advancing quality reducing cost and advancing efficiency 纤维增强塑料( fpr )是一类具有比强度高、比刚度高、低密度、耐腐蚀性等优异性能的复合材料。
With high strength , low density , good castability and machineability , al - si series cast alloy has become one of the most important structural materials in manufacturing industry , and zl101a is the most widely used 铸造铝硅合金具有容重小、比强度高、铸造成形性和加工性能好等优点，已成为制造行业中最受重视的结构材料之一，该类合金中的zl101a应用最为广泛。
Al - hard metal , al - ceramics composites are new compositie materials possessing of attractive applyment prospect because of their light - weight , high specific strength , good elevated - temperature , and better wear resistance properties and so on Al -硬金属、 al -陶瓷具有质量低、比强度高、耐高温好、热膨胀系数小、耐磨性能好等一系列性能，是一类很有应用前景的新型复合材料。
Principal components analysis showed that the first four principal components variance accumulation contribution rate amounts to 89 . 53 % , which reflected most of the variance information as listed characters above 通径分析结果显示，直接通径系数大小排序，产量因素性状依次为单株成铃单铃子棉重子指衣分；纤维品质性状依次为纺纱均匀性指数麦克隆值整齐度伸长率比强度2 . 5 %跨长。
