In this paper the effect of ti, fe, Cu, Niand Zn compounds on the photodegradation of polyolefins was sum...
本文主要综述了钛、铁、铜、镍、锌等金属化合物对聚烯烃光降解的影响。
There exist large Au, Cu, Pb-Zn, Ni, rare metals, rare earth, Sn, Mo, V, Ti, W and some other types of ore deposits.
具有大型、 超大型规模的矿产为金、铜、铅锌、镍、稀有金属、稀土金属、锡、钼以及钒、钛、钨等。
The contents of ti in magnetite and s in ore are low, with a very small amount of Pb-Zn sulfide minerals.
磁铁矿中钛含量低，矿石中硫含量低，罕见铅锌硫化物矿物。
The contents of ti in magnetite and s in ore are low, with a very small amount of Pb-Zn sulfide minerals.
磁铁矿中钛含量低，矿石中硫含量低，罕见铅锌硫化物矿物。
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