Giúp Em dịch đoạn Anh văn chuyên ngành Hoá này với ạ.?

Giúp Em dịch đoạn Anh văn chuyên ngành Hoá này với ạ.?

Các Bác làm ơn dịch dùm Em đoạn văn này, em xin cảm ơn..pre-soaking the fabric :just before dyeing.pre-soaking the fabric for fifteen minutes to 1 hour in a solution of sodium carbonate, mixed one cup per gallon of water.this stuff is also known as washing soda( but do not buy the type sold in the grocery store, it may have undesirable ad***ives)the kind sold for swimming pools - one brand is "pH Up" is excellentapplying the dye :lay the fabric nearly flat, or pleated loosely, and drip with squeeze bottles directly onto the fabric, or spray it on with a spray bottle.this part is easy and fun, but always more tiring than we expect. be sure to war groves.the sodium carbonate is slightly cause and must be washed or at least wiped off of our skin immediately after contact.