 鲜花( 17)  鸡蛋( 0)
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公认的硬度划分是:+ _; ^" ]* N2 J1 G/ B- ]
Water containing calcium carbonate at, H; R8 i- _2 q4 f" v9 v( Q+ N
concentrations below 60 mg/l is generally considered as soft; 60–120 mg/l,
* G/ ]* L m. B8 O E0 N2 C/ `* ?' ?moderately hard; 120–180 mg/l, hard; and more than 180 mg/l, very hard6 _7 T; A1 b4 {9 Q( O- M. |
爱城的水硬度在150-160之间,属于硬水,但不算很硬。这种硬度的水不需要在水厂进行软化处理,适当硬度的水对健康不但无害,反而有益。以下是加拿大主要城市水硬度指标:
" e5 ~- R3 ~* E* IMontreal 116 ppm,Calgary 165 ppm, Regina 496 ppm, Saskatoon 160-180 ppm, Winnipeg 77 ppm,Toronto 121 ppm,Vancouver < 3 ppm, Charlottetown, PEI 140–150 ppm, Waterloo Region 400 ppm, Guelph 460 ppm.$ i5 t4 k, F4 d, E, R1 ?7 P
在家里根本不需要安装什么软化水装置,而且都要把水烧开的做法也不可取,钙和镁都沉降了下来,其实这两种元素都是身体需要的,直接喝冷水最好,如果肚子能适应的话。+ d0 e7 `0 [9 E h" A: r* X7 ~! n
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