Nickel-base alloys with good conductance can be coated on the surface of PVC activated by PdCl2., PVC表面用氯化钯活化可得到导电性良好的镍基合金镀层。
15、 qīng chūn shì yī chǎng yuǎn xíng , huí bù qù le ; qīng chūn shì yī chǎng xiāng féng , wàng bù diào le ; qīng chūn shì yī ...