Filled with the water bicycle tire, if go outside infusion, water will be provoked gummed volume increase. The water injection pipe will put pressure on the wall, within a certain range, gummed by support, the greater the pressure. Our blood vessels like 

Track and field (track and field) or athletics track and field events and almightiness game. The height and distance calculation results in the jumping and throwing program called "field"; by the time of walking and running calculation results o

The elderly sports need to grasp three key    People into old age, the body each viscera function starts to decline.Tracking survey of Chinese elderly society shows that 75.23% of the elderly with chronic diseases, such as high blood pressure, heart disea

Urinary calculi, why don't doctors give you medicine or surgery, can actually make you home running, jumping rope?Running jump rope really can treat the "stone" is killing people?To solve these problems, a Peking University first hospital ur

Stopwatch is important of two kinds of machinery and electronics, electronic watch and can be divided into two categories, three buttons and four buttons. The department of P.E. teachers use more is electronic stopwatch, machine a stopwatch has become his