溶液里的维生素比固体食物里的维生素受到的影响更大。Vitamins in solution are more affected than those in solid foods.它们的工作原理是通过固体来反射微波。They work by bouncing microwaves off solid objects.木星表面可能根本就不是固体的。The planet Jupiter may have no solid surface a...
One end of the windpipe is connected with a unidirectional inflating valve.气管的一端与单向充气阀连接.Experiment materials: jar , windpipe, limewater, flume and the experiment record chart for each group.学生用材料: 广口瓶 、 导气管 、 石灰水、火柴、集气瓶...