品牌:欧美品牌 | 规格: | 产地:欧美 |
2711P-RN6
2711P-RN6
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联系人;夏极
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wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡160 mm Dial,Dry Case ( Fillable Type ), 232.50,1/2" NPT Male BOTTOM
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connectio
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connectio
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connectio
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connectio
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connectio
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connection,
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connection,
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connection,
wika威卡63 mm Dial,Dry Case ( Fillable Type ), 213.53,1/4" NPT Male BACK Connection,产品介绍我们知道地球大气层上有一层臭氧层,科学家们已经发现臭氧层能吸收紫外线,研究表明臭氧仅对波长253.7nm的紫外线具有大吸收系数,在此波长下紫外线通过臭氧会产生衰减,符合兰波特比尔定律。该方法已被美国等国家作为臭氧标准分析方法。该臭氧检测仪就是采用紫外线吸收法的原理,用稳定的紫外灯光源产生紫外线,用光波过滤器过滤掉其它波长紫外光,只允许波长253.7nm通过。经过样品光电传感器,再经过臭氧吸收池后,到达采样光电传感器。