打开一看，全是崭新的“钻石牌”电扇！

Open on see, it's all new "diamond" brand electric fan!

youdao

钻石牌在1911年公开了其P4S3火柴专利，因此竞争对手们可以停止使用极度危险的另一种材料：白磷。

Diamond released its patent for P4S3 matches in 1911 so competitors could stop using an extremely dangerous alternative: white phosphorous.

youdao

钻石牌在1911年公开了其P4S3火柴专利，因此竞争对手们可以停止使用极度危险的另一种材料：白磷。

Diamond released its patent for P4S3 matches in 1911 so competitors could stop using an extremely dangerous alternative: white phosphorous.

youdao