A bonded stationary phase for gas chromatography has been prepared by the thermal reaction between 405 white support and PEG 20m.
本文采用热反应键合法,将PEG - 20 M与405白色硅藻土载体进行热键合制备气相色谱键合固定相。
At a White House event Tuesday to honor Greek independence, President Barack Obama pledged support for a close ally.
VOA: standard.2010.03.11
If you believe black men are criminals, then when you see a black man who is a criminal you'll chalk it down as support but you'll pay less attention to evidence that white men are criminals and some black men are not criminals.
如果你相信黑人都是罪犯,当你看到一个是罪犯的黑人时,你就会觉得这是证据,但你不会注意其他证据,证明白人也有罪犯,黑人也有不是罪犯的。
But at an event at the White House with past and present American Olympians, the president made clear his support for Chicago's bid is strong.
VOA: standard.2009.09.16
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