negative plate的用法和樣例：
例句
- Negative plates generally used litharge as the lead oxide material.
負極板一般用氧化鉛做活動(dòng)性物質(zhì)材料。 - On the other hand, prepared negative plate expander is commercially available.
另一方面，在商業(yè)上可購到現成的負極板膨脹劑。 - I want 2 enlargements printed from this negative.
我要用這張底片印兩張放大照片。 - How many copies do you want to print from the negative?
你想用這張底片印幾張？
