Atmospheric corrosion of pure copper under sheltered and unsheltered exposure condition during 1 year period in Shenyang atmosphere was studied.
通过一年的遮雨和未遮雨大气暴露试验，研究了纯铜在沈阳城市大气环境下的初期腐蚀行为。
2
It also put forward a novel conception to resolve the locating center and abscission point under the condition that the fruit or vegetables are partially sheltered.