As an initial stage on the process of foamed nickel preparation, a layer with low phosphorus content nickel deposit is applied on polyurethane foam substrate as a conducting layer.
在制备泡沫镍材料的过程中，首先要求在聚氨酯海绵基体上低磷化学镀镍制备导电层。
Scale and corrosion can be restrained effectively by treating circulating water by the reagent prescribed low phosphorus content and highly anti-scale and anti-corrosion components.
采用低磷、高阻垢性、高缓蚀性配方的缓蚀阻垢剂处理电厂的循环水，能有效地控制系统的结垢和腐蚀。
The results indicate that microcrystalline deposit with low phosphorus content has higher hardness, modulus and fatigue resistance than the amorphous deposit with high phosphorus content.
结果表明，低磷微晶镀层较高磷非晶镀层具有更高的硬度、弹性模量和疲劳抗力；
Using water treatment agents containing low content phosphorus to reduce phosphorus discharge is an effective way for preventing phosphorus pollution.
采用低磷循环冷却水处理剂，减少磷排放，是防止工业磷污染的有效方法。
Most plants in the temperate zone have relatively high content in phosphorus while the calcium content is relatively low. Some plants have an abundant collection of iron and manganese.
暖温带和温带大多数植物磷含量相对较高，而钙含量较低，部分植物有聚铁和聚锰现象。
The analytical data revealed that the potential fertility of the dryland soils was rather low, such as nitrogen, phosphorus and potassium content in soil were deficient on the whole.
分析数据表明，该区旱地土壤潜在肥力较低，有机质含量差异较大，大部分土壤氮、磷、钾养分供应不足。
This thesis is about research and discussion of purification of yellow phosphorus off-gas at low temperature and low oxygen content.
本文研究了低温微氧催化氧化净化黄磷尾气的相关问题。
This thesis is about research and discussion of purification of yellow phosphorus off-gas at low temperature and low oxygen content.
本文研究了低温微氧催化氧化净化黄磷尾气的相关问题。
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