Transition metal nitrides belong to a class of interstitial compounds, have the properties of covalence compound, ion crystal and transitional metals.
过渡金属氮化物是一类金属间充型化合物，兼具有共价化合物、离子晶体和过渡金属的性质。
Transition metal nitrides and carbides were a class of interstitial compounds with special structure characteristics which decided distinctive catalytic effects.
过渡金属氮化物与碳化物是一类间充性化合物，其结构特点决定其在催化反应上具有独特的催化效果。
Thus, polar compounds cannot enter the brain but can enter the interstitial fluids of most other tissues.
这样，极性物质就不能进入脑组织，但可以进入其他多数组织间液。
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