They can all be made in minutes by even the most ham-fisted of cooks.即使是最笨手笨脚的厨师也能在几分钟之内把它们全部做好。He cooks a mean salmon.他烧鲑鱼的水平一流。Cooks are also employed aboard ships and at construction and logging campsites.另外厨师还能就职于船只和...
电磁波是由一种称为速调管的微波电子管产生的.The electronmagnetic wave is produced by microwave tubes called klystrons.这些工厂生产电子管 、 晶体管 、 收音机和电视机.These factories produce tubes, transistors, radio sets and TV sets.这些放大器是用微型电子管制成的.These amplifier...