medium-high ball 中文意思是什麼
medium-high ball
解釋
平空球-
The catena products design for stsrting closing controling of diversified strong corrosive medium, configuration form is float through form, connect form is flange, valves crust adoptcarbon - steel pad fluorine plastic inside, valve - ball is made of metal embed parts wrap fluorine plastic outside with integrative of valve - staff, have trait of commendably rotproof and airproof closing and starting neatly fleetly, and that exterior handsome intensity high durable
本系列產品是為各種強腐蝕性介質的啟閉控制而設計，結構形式為浮動直通式，連接形式為法蘭，閥外殼採用碳鋼內襯氟塑料，閥球為與閥桿一體式金屬嵌件外包氟塑料工藝製造，具有耐腐密封性好啟閉靈活快速的特點且外型美觀強度高經久耐用。 -
Based on the experimental results and the correlative chemistry theory, the phases formed in the process and its influenceable factors were studied. the significant results were enumerated as follows : as for the mn - h2o system, 5g pure mn scraps ( 99. 5 %, - 200mesh ) and distilled water served as the starting materials were milled by high energy ball miller together with 200g steel balls as the milling medium. the experiments were conducted with the rotation speed of 380rpm. - mn3o4 nanopowders were fabricated after milling some time and would experienced phase transformations if continue to be milled. the reaction would be accelerated if a little of hcl or mnso4 was added while be decelerated if. a little of naoh was added. the - mn3o4 phase with particl size between 20 ~ 100 nanometer was obtained after milling 1. 5h when trace hcl was added. the oxygen added to the ball tin has little effect on the reaction
主要實驗結果如下: （ 1 ）對于mn - h2o系，通過高能行星式球磨機，在50ml蒸餾水中球磨5gmn粉末，球料比為40 : 1 ，轉速為380rpm ，球磨一定時間后獲得了納米級單相- mn3o4 。隨著球磨時間的延長，生成的- mn3o4會繼續被氧化或發生晶型轉變。加入微量hcl或mnso4會明顯加快mn的反應，加入hcl后，球磨1 . 5h后即獲得粒徑為20 100nm的單相- mn3o4粉末;加入微量的naoh會抑制mn反應生成- mn3o4 。
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