Steaming: The fabric impregnated with caustic sodasolution is fed into a cloth box called steam chamber.
汽蒸：用烧碱浸轧过的织物喂入叫做汽蒸箱的贮布箱。
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The process was discovered by John Mercer in 1850 when he noticed that cotton undergoes a general swelling and shrinking when it is treated with caustic sodasolution.