The extractive content from different tree species has great effect on electroless plating. The resin of Softwood and the tannic of hardwood cause plating liquid easily decompose.
不同树种的抽提物含量对木材化学镀镍的影响较大，针叶材主要是树脂的含量，阔叶材主要是单宁的含量，这些抽提物容易造成镀液的分解。
The teacher carved a statue from the softwood of a tree limb. He made it look exactly like himself, life-size.
他用一截软木树枝做了个与他自己等身大个的雕像，看起来非常象他。
The pulp is from long-fibered, coastal softwood species grown in the great tree growing regions of Northern California and Southern Oregon.
纸浆是，从长远的纤维状，沿海针叶树种，生长在伟大的树生长的地区，加州北部和南部的俄勒冈州。
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