前驱

And it was found that, by the adoption of distilled water, the ζ potential of the powder was obviously decreased close to its isoelectric point to make the filter velocity slower.

探讨了制备过程中前驱体表面电位ζ与洗涤分离的条件在分离过程中对过滤速度的影响，发现采用去离子水洗涤后，粉体的ζ电位明显降低，接近其等电点，从而导致洗涤速度变慢。

Moreover, the activated carbon has strong plasticity. It means that the properties of activated carbon can be reformed by kinds of pretreatments.

对活性炭载体进行预处理的作用，除了在一定程度上改变了活性炭的比表面和孔结构等物理性质之外，最大的作用是在活性炭表面引入了有利于钯前驱体吸附的功能性离子或基团。

He singeth many sweet notes before the Exorcist, which he must not regard, but by-and-by he must bid him put on Human Shape.

他singeth许多甜笔记前驱魔人，这是他不能自视，而是由和由他必须向他提出的关于人体形状。

At the rear was an innovative combination transaxle with the gearbox, clutch, differential, and inboard-mounted drum brakes.

在后面是与变速箱，离合器，差的创新结合变速，和内侧安装鼓式制动器。

For more people can apprecaite and have the master work, there is reproduction painting appears in the market, the large various selection of paint,the high saturation of color plus the plentiful sfumato, to make the reproduction perfect copy and detail as original painting, so as to meet the requirment of amateurs who love art paintings,they do not need to pay high price to get classical paintings.

颜料色域广，色彩饱和度高，色彩层次丰富，图像色彩还原真实，能完美的复制原作，满足艺术爱好者欣赏，艺术爱好者们不用支付昂贵的价格就能拥有经典油画。