icraf is trying to encourage policymakers and communities who continue to plant evergreen trees — as sources of pine resin or pulp for paper production, for example — to change their practices.
pine nuts are filled with protein in larger amounts than most other nuts along with pine resin and oils useful to the digestive system.
松仁含有比其它大部分坚果更大量的蛋白质,同时松脂和松油对消化系统也是有益的。
when the pine resin ducts were widely destroyed, there were no obvious differences between the cells in different positions.
当多数树脂道普遍破损时,与接种点距离远近不同的部位细胞病变已无明显差异。
flux contains a large number of resin, will produce phenyl (c6h5oh), while the flux activator in the pine resin will produce hydrogen gasification (hcl) and other compounds.
the so-called plastic, it is in fact a kind of synthetic resin, the shape with the natural resin of pine resin in the similar, but has the power to synthesize chemically, and is called plastic.