密封严密，耐氯根腐蚀，介质的结疤、结垢不影响启闭，这是费希尔纯碱专用蝶阀的最显著特点。

The sealing is tight, and can resist corrosions by chloride radical. Scaring and scaling not influence opening and shutting is the special feature of eccentric valve special for soda.

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方法采用《消毒技术规范》(2002年版)有效氯含量测定方法以及标准偏差、方和根等统计学方法。

Methods Valid chlorine content measurement method and statistical methods such as standard deviation, and square and root etc in "Technical standard For Disinfection" (2002 version) was adopted.

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方法二：用硼氢根阴离子交换树脂、硫粉和4-氯丁基二茂铁合成二二茂铁丁基二硫。

The second method:Diferrocenebutyl disulfide was synthesized from 4-chlorobutylferrocene using sulfurated borohydride exchange resin(SBER).

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The ones that are most important in physiology are ones that only allow ions to go through: sodium, potassium, chloride, calcium, bicarbonate.

在生理学上这种,只能允许某种离子通过的通道十分重要,这些离子包括钠离子,钾离子,氯离子,钙离子和碳酸氢根离子

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