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Soluble polymer-supported reagents and catalysts in the field of liquid-phase chemistry appeared during last fifteen years and their applications have been reviewed.
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摘要本文总结了近15年来液相化学领域内出现的可溶性聚合物支载的各类试剂和催化剂及其应用。 |
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Solutia Shanghai office is a wholly-owned foreign company registered in WGQ Free Trade Zone.
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首诺国际贸易(上海)有限公司是美国首诺公司的全资子公司,公司注册于外高桥保税区。 |
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Solution A: First of all, what is topspin?
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解决方案A:首先,什麽是上旋? |
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Solution A: Instead of trying to arm the ball, you've got to get your whole body involved in the stroke.
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解决方案A:不要尝试用手臂处理球,你必须把你的整个身体卷入在打击。 |
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Solution A: Like the forehand, the key here is the inside-out swing.
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解决方案A:像正手拍一样,这里关键是内外挥拍。 |
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Solution A: Remember, it's impossible to impart topspin without a low to high swing.
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解决方案A:记得,没有由低到高的挥拍要授予上旋球是不可能的。 |
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Solution A: Remember, racquet speed at contact will determine how much power you have.
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解决方案A:记得,接触点的网拍速度将决定你有多少力量。 |
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Solution A: To make sure that you get the racquet up high enough on the backswing, you've got to use the non-hitting hand and arm to help.
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解决方案A:确定你在背后拉拍上让网拍举起到足够高的程度,你必须使用非打击的手和手臂帮助。 |
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Solution A: You have to swing low (one foot below the contact point) to high to clear the net from the baseline.
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解决方案A:你必须由低往高挥拍(接触点下面一呎)清除从底线的网障碍。 |
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Solution B: Make sure to use your non-hitting hand to keep the racquet face steady and closed at the low point of the backswing.
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解决方案B:确定使用你的非打击的手以保持网拍面在背后拉拍的低点是定态而且关闭的。 |
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Solution is to either make six of a doubling at draw frames AND/OR use single passage after comber.
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解决的办法是在并条采用6根喂入或在精梳后面采用单根喂入。 |