1. At present, domestic and foreign cities and towns gas commonly used agent for odorization tetrahydrothiophene (THT).
目前，国内外城镇燃气普遍采用的加臭剂为四氢噻吩(THT)。
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2. Odorization pumps are specially designed diaphragm plunger metering pump, plunger travel of the exercise machine lock, each time to maintain a constant output.
加臭泵是专门设计的隔膜式柱塞计量泵，柱塞的运动行程机械锁定，每次输出量保持恒定。
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3. Odorization pumps are specially designed diaphragm plunger metering pump, plunger travel of the exercise machine lock, each time to maintain a constant output.
