硬地:网球平民化的功臣

来源 :网球 | 被引量 : 0次 | 上传用户:zhaorongjian
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
四大满贯中,美网和澳网都是硬地球场,它的建造相对便宜,后期维护费用很少。可以说,硬地球场让网球平民化成为了可能。在中国,乃至全世界,硬地都是最普遍的场地类型。以美国为例,一项行业调查显示,美国超过70%的网球场地是硬地球场。硬地球场主要包括沥青或混凝土的基础层,再覆以彩色涂层系统。涂层面层大多使用丙烯酸材料,这是硬地球场成为流行的助推器,它既可以保护场地不受自然环境侵扰,也改善了场地的外观,甚至直接影响场地性能。硬地球场的使用没有条条框框的限制,只要地面没有冰雪,都可以打球,甚至在雨后它们也可以很快排水并变干,这些特性为它们赢得了“全天候球场”的称号。 In the four Grand Slams, the US and Australian Open are all hard courts, and its construction is relatively cheap, with little maintenance costs in the later period. It can be said that hard courts have made the civilian population of tennis possible. In China, and even in the world, hard land is the most common type of site. In the United States, for example, an industry survey showed that more than 70% of the tennis courts in the United States are hard courts. The hard court mainly includes the base layer of asphalt or concrete, and is covered with a color coating system. Acrylic materials are mostly used for the coated surface layer, which is a popular booster for hard courts. It can protect the venue from the natural environment, improve the appearance of the venue, and even directly affect the performance of the venue. There are no restrictions on the use of hard courts, as long as the ground does not have ice and snow, can play, even after the rain they can quickly drain and dry, these characteristics have won the title of “all-weather stadium”.
其他文献
如今,生活在大都市的人们纷纷在学习理财的方法,希望通过理财使得自己的财富能够快速增长。因此,各种各样的理财书籍、工具都成了抢手 Today, people living in metropolita
French Lingerie will put on a show in Shanghai at the Citic Square Atrium, from October 22nd through to the 5th of November 2012, after having already been succ
我們的工業对銅的純度提出了重大的要求,特別是關於雜質砷与銻惡化陰極銅的質量的問題。因此本文中着重地研究二者在電解精煉銅時的行為。 雖然关於這個問題的著作很多(如巴
China (Liaoyuan) International Hosiery Trade Fair (2012) welcomed 30,000 visitors at home and abroad who came for business opportunities in the hosiery industry
我国氧化铜矿资源比较丰富,但多属难选难浸矿。为了早日开发利用这些资源,为社会主义建设事业服务,不少工厂和科研单位曾进行过大量的研究工作,采用离析法处 China is rich
1997年1月至1998年6月,我们对90例Ⅱ、Ⅲ期乳腺癌患者于术前行联合化疗,对其临床效果进行观察,现报告如下。1资料与方法本组患者均为女性,年龄24~69岁,平均46.5岁。均经乳腺钼靶片、红外线联合检查及细针
左半结肠癌并脾转移化脓穿孔1例报告江西省泰和县人民医院外一科(343700)康飚刘荣华刘晓云1病例资料患者,男,20岁。因左上腹隐痛半年,突发剧痛而入院。半年来常感左上腹隐痛不适,腹泻、便秘。
对362例针吸穿刺的乳腺病进行细胞学和组织学对照观察,共检出乳腺癌35例。针吸穿刺涂片细胞V级可以直接诊断乳腺癌。细胞Ⅲ—Ⅳ级或切片组织为不典型增生应结合临床、影像学
郑州铝厂现用的铝土矿含镓0.006~0.008%,种分母液含镓0.13克/升,碳分母液含镓0.07克/升,拜耳法精液含镓0.178克/升。生产溶液中镓已达到平衡,不再积累,自矿石进入溶液中的镓都
优质祖母绿透明晶莹。人工祖母绿、绿色玻璃与祖母绿真品的区别是:天然祖母绿大多有瑕疵或包体,并可见二色性。天然玛瑙冬暖夏凉,透明度不如人工合成的好,稍有混沌,此外,天然