One day, the strong donkey wanted to show off his strength. So he stuffed his cart with lots of baggage and tried to pull it.
一天，这头强壮的驴子想要炫耀自己的强壮了，于是就在自己的二轮运货马车上装满了包裹并且试图拉动它。
2
The gradient PPS/FEP composite anti-corrosive coatings were prepared on carbon steel. The bonding strength of all coating systems was determined by the pull-off test.
在碳钢表面制备了具有梯度结构的PPS/FEP复合防腐蚀涂层，采用拉开法测定了各涂层体系的结合强度。
3
The bongding strength of blended PPS/FEP anti-corrosion coatings was determined by pull-off test. The effects of the blending component PPS on the bongding strength were studied.