Bag of durable wood to the grain side bags as bright spots in the cortex, is bound to be the subject of fall never popular accessories.
包袋以耐用的软木纹皮质侧袋为亮点，必将成为永不退流行的主题配件。
2
The article discusses and finds the Auster grain growing rules and relations of structure and properties of X70 steel in weld pipe and pipe accessories under the different heating temperature.