and-or expander 中文意思是什麼

and-or expander 解釋
「與或」擴展器
  • and : n. 1. 附加條件。2. 〈常 pl. 〉附加細節。
  • or : or2,〈古、詩〉在…之前，比…更早〈普通用or ever, or e'er〉。n. 【徽章】黑金色，黑色。
  • expander : 襯環
  1. The characteristics of samples were investigated using xrd, hrtem, n2 adsorption technique and so on, and it was shown that mesoporous silica mcm - 41 had been synthesized in this work with uniformly sized pores and long - distance ordered arrangement of hexagonal structure, and the pore size was about 2nm, and could be regulated by the second hydrothermal treatment or the addition of l, 3, 5 - trimethylbenzene ( tmb ) as organic assistant expander

    結果表明合成試樣孔徑尺寸單一，六方孔道排列，具有良好的長程有序結構，孔徑為2 . 1nm ，為典型的有序介孔結構。並通過二次水熱處理和添加有機輔助劑1 ， 3 ， 5 -三甲苯（ tmb ）對合成mcm - 41的孔徑進行調節。
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