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Backetball,volleyball,tennis,badminton courts,all kinds of competition tracks and fields,and childrens playgrounds,golffieids,swimming pool borders,etc.
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篮球场，排球场，网坏场，羽毛球场，各种比赛田径场。儿童乐园，幼稚园活动场。游泳池畔，高尔夫球场。 |
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Backflow preventer manufactured from 300 Series stainless steel for corrosion resistance.
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防回流阀采用耐腐蚀的300系列不锈钢制造。 |
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Backflow preventers must be installed in high-visibility locations in order to allow for immediate notice of telltale discharge or other malfunction.
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防回流阀必须安装在清晰可见的位置，以便能够立即注意到排放报警或其他故障。 |
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Backflow preventers should never be placed in pits unless absolutely necessary and then only when and as approved by local codes.
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除非绝对必要并且得到当地规程的批准，否则防回流阀不能放置在坑内。 |
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Backflow preventers should never be placed in pits unless absolutely necessary and then only when approved by local codes.
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除非绝对必要并经过当地规程的批准，否则绝不应该将防回流阀放置在坑内。 |
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Backflow prevention assemblies MUST be installed by a licensed journeyman tradesperson, who is recognized by the authority having jurisdiction, and inspected for compliance with local safety codes.
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防回流阀总成必须由有资格证书的熟练技术人员安装，安装人员必须通过有关主管部门的认可，并符合当地安全规程的要求。 |
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Background : Sepsis attenuates the muscle-relaxing effects of nondepolarizing neuromuscular blockers.
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背景：脓毒血症能减弱非去极化神经肌肉阻滞剂的肌松作用。 |
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Background : The complex hospital environment requires special attention to ensure healthful indoor air quality (IAQ) to protect patients and healthcare workers against hospital-acquired (nosocomial) infections and occupational diseases.
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前言：复杂的医院环境需要特别注意并确保有益健康的室内空气品质（IAQ）以保护病人和医疗人员免于院内的传染和职业上的疾病。 |
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Background : Women respond differently to anesthesia than men, initially recovering more rapidly, but having more postoperative morbidity.
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背景：女性对麻醉的反应有别于男性，她们开始恢复得较快，但术后却有较多的发病率。 |
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Background Atrial fibrillation is common and associated with significant morbidity. Previous studies suggest underuse of anticoagulant therapy in patients with AF.
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背景：房颤是一种较普遍和发病率较高的疾病。既往研究发现房颤抗凝治疗不足。 |
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Background Calcified plaque in the coronary arteries is a marker for atheromatous-plaque burden and is predictie of future risk of cardioascular eents.
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研究背景：冠状动脉钙化斑是动脉粥样硬化负荷的标志，预示增加心血管事件的风险。 |
