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ypfkb

铁杆木虫 (正式写手)

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rain841230

捐助贵宾 (正式写手)

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ypfkb(金币+1,VIP+0): 9-5 08:53
ypfkb(金币+1,VIP+0): 9-28 10:21
The pulverized catalyst was placed in the middle part of a reaction tube, kept under constant termperature enviroment. Two ends of the tube were sealed by asbestus and sieves.
3楼2009-09-04 21:05:58
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xjb158

金虫 (小有名气)

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ypfkb(金币+1,VIP+0): 9-5 08:53
ypfkb(金币+1,VIP+0): 9-28 10:21
catalyzer(powder state) is filled in the middle of reaction pipe, the constant temperature section, two ends (of the pipe) are filled with screen and silica wool.
2楼2009-09-04 15:13:30
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lixiaod001

金虫 (正式写手)

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ypfkb(金币+1,VIP+0): 9-28 10:21
Catalyst (powder) in central tube tensily reaction temperature on both ends and quartz cotton screen.
4楼2009-09-12 09:18:52
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mcphone

铜虫 (小有名气)

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ypfkb(金币+1,VIP+0): 9-28 10:21
The powder catalyst is filled in the middle of reaction pipe, the constant temperature section ,of which  screen and quartz wool  are fixed at both ends .
5楼2009-09-12 09:38:57
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