The gas chromatograph is the main tool for the completion of gas chromatography analysis, and the operator must have good operational skills to reflect the characteristics of the operating cartridge and achieve rapid and accurate analysis. Gas chromatograph operating procedures 
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Editor: (Hardware Business Network Information Center) http://news.chinawj.com.cn
Auction is a kind of spot trading mode in which an auction house specializing in auction business accepts the entrustment of the owner of the goods, displays the goods to be auctioned to the buyer at a specified time and place in accordance with certain rules and regulations, bids publicly, and finally the auctioneer sells the goods to the buyer with the highest bid.
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