The runoff and boron loss of soils without covering are more serious …
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2. 用XPS研究了渗硼层磨损表面的成分、元素价态及其随深度的变化。
The elemental composition and valence state of the elements and their changes with the variation of depth were investigated by mains of XPS.
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3. 研究结果表明：硼对铸态高铬铸铁力学性能有显著影响，而钼和铜对其性能影响不大。
The results showed that boron has a notable influence on the mechanical properties of high chromium cast iron at as-cast and molybdenum and copper has little influence on the mechanical properties.
When boron content surpasses 0.010 %, there is some clear continuous carbide network or discontinuous carbide network in the microstructure, as a result, the impact toughness declines greatly.
When boron content surpasses 0.010 %, there is some clear continuous carbide network or discontinuous carbide network in the microstructure, as a result, the impact toughness declines greatly.
