aThe small bridge over the flowing stream, misty rain others are Suzhou's symbol, the blue brick alley, the running water bites rat-a-tat during, strolls, comfortable extremely.Suzhou's bridge are many, Suzhou's river are many, the botanical garden are also many.Suzhou's botanical garden ...
aSandwich plate structure used in the practical engineering, according to the different forms of the sandwich, the sandwich plate is divided into many types, including: foam sandwich board, corrugated plate sandwich plate, truss sandwich board, honeycomb sandwich panels, as shown in figure 2-1. ...