0 a piece of paper that can be used to get something without paying for it, or at a reduced price -- 礼券；赠券；优惠券
Both coated and uncoated steel coupons were mounted on the sample by using doublesided adhesive tape.
The networks involved in clandestine trade of ration cards and coupons could become convoluted.
The level attaching to coupons was independent of the laboratory media used for coating.
The use of grain coupons was an important element of the rationing system.
None of these sales was accompanied by any of the necessary authorisation, coupons or paperwork.
Each merchant was responsible for ensuring that the coupons were legitimate and used legitimately.
After midnight have to put [parking coupons] one, you know.
Using the highresolution video microscopy system, estimates were made on the numbers of spores retained on the aluminium coupons after plasma treatment.
