They believe that the humic materials are leached from decaying plant materials . 他们认为腐植物料是从腐烂的植物体浸沥而来。
Electron microscopy has been used for elucidating the shape and size of ha particles . 电子显微镜曾用来观察腐植颗粒的形状和大小。
All ha's showed a loose spongy structure with a large number of internal spaces . 所有腐植酸都有疏松的海绵结构，同时有大量的内部空间。
It is, in fact, quite probable that calcium released by litter decay is used by uptake by plants . 事实上，由凋落物腐解释出的钙很可能被植物摄取利用。
Extraction of humic substances from sediments is often the first task that confronts the investigator . 从沉积物中萃取腐植物是研究工作者遇到的第一个问题。
Ultimate analysis provides an useful inventory of the distribution of the major elements in humic substances . 元素分析提供腐殖物质中主要元素分布的有用资料。
Tonight the soup is thick with potatoes, spoiled by frost and rotten-tasting, but substantial . 今天晚上，汤里的土豆很多，虽然是冻坏了的，有点腐味，但是可以充饥的。
They found out that even a very thin sheet of this three-ply metal was not damaged by corrosion after five years . 他们发现即使是极薄的“三层合金”板泡上五年也不会腐损。
Figure 16-20 shows the good correlation observed between the magnetic field and the gold values over a muck-covered placer in this area . 图16-20表明了此地区腐殖土覆盖下砂积矿床上面的磁场和含金量之间的良好对比关系。
