低热量的人造甜味剂广泛用于碳酸饮料中，但由于会给人很硬的金属感常常受到非议。
Low-calorie artificial sweeteners used in popular fizzy drinks are often criticised for leaving a metallic flavour in the mouth.
不使用其他金属或人造材料。
阀门的优点：用金属横膈膜代替人造橡胶衬垫在阀门和阀杆的顶部机件处给予了这种阀门出众的泄漏完整性。
Valve Advantages: The replacement of elastomeric packings by metal diaphragms gives this valve superior leak integrity at the top works of the valve and stem.
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