mn-b steel 锰硼钢
Mn-B white cast iron 锰硼白口铸铁
Mn-AA B 强络合强度的氨基酸锰
Wear-resistant Mn-B white cast iron 锰硼抗磨白口铸铁
Mn AA B 氨基酸锰B
b-mn permeating 硼锰共渗
Ni-Mn-Co-Si-Fe-Nb-B Alloy 镍锰钴硅铁铌硼合金
The influence of Si, B, Mn and their coordination on the growth of potted plant Four-season-fragrant-olive by spraying fertilizer on the leaf surface were studied.
研究了在叶面喷施的条件下，硅硼锰以及硅硼锰配合对盆栽四季桂生长的影响。
The effects of PPJ, a surfactant, on B and Mn ion absorption in cotton were studied.
低浓度的表面活性剂PPJ会促进棉叶对硼和锰离子的吸收。
Organic-inorganic granular fertilizer made of chicken manure powder plus N, P, K chemical fertilizers and microelements B, Zn, Mn, et al.
利用鸡粪为主体原料配以N、P、K化学肥料和硼、锌、锰等微量元素制成便于贮藏、运输和使用的有机-无机颗粒肥。
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