“football turf”的概念、定义、翻译、参考文献-科学参考

单词	football turf
释义	football turf Encyclopedia 农学﹝运动场草坪﹞释 football turf; soccer turf足球场草坪人工培育条件下生长的有承受足球运动能力的草本植物群落，或工厂生产的能满足足球运动要求的人造草坪。前者为传统意义上的天然足球场草坪，后者为工业化的人造足球场草坪，都可以开展足球运动。
随便看	positive current positive curvature positive curvature manifold positive cycle positive definite positive definite bi linear form positive definite bi-linear form positive definite closed form positive definite form positive definite function positive definite functional positive definite Hermitian matrix positive definite inner product axiom positive definite kernel positive definite matrix positive definiteness positive definite operator positive definite potential positive definite product positive definite quadratic form positive definite scalar product positive definite sequence positive definite solution positive definite space positive definite tensor

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