concentration o

[ 例句 ] The change of emission spectra in Y _ 2 O _ 2 S : Sm ~ ( 3 + ) , Mg ~ ( 2 + ) , Ti ~ ( 4 + ) and Y _ 2 O _ 2 S : Tb ~ ( 3 + ), Mg ~ ( 2 + ), Ti ~ ( 4 + ) were studied though altering the concentration of activator.

[ 释义 ] 通过改变掺杂激活剂离子的含量,分析了合成样品Y_2O_2S:Sm~(3+),Mg~ (2+),Ti~ (4+ ) 和Y_2O_ 2S:Tb ~ ( 3+ ), Mg~ ( 2+ ), Ti~ ( 4+ ) 中发射光谱的变化.

concentration o 来自 托福考试词汇查询 - www.wolaishi.com/TOEFL/

[ 例句 ] It indicate that the variations of O _ 3 concentration exist remarkably different on difference levels.

[ 释义 ] 研究结果表明:首先,边界层内存在明显的O_3浓度垂直差异,白天差异较小,夜晚差异较大.

concentration o 来自 托福考试词汇查询 - www.wolaishi.com/TOEFL/

[ 例句 ] The effects of different doping concentration of Eu 2 + on the properties of Sr 2 Al 6 O 11 - based phosphor were studied.

[ 释义 ] 研究了不同Eu掺杂浓度 对Sr2Al6O11基磷光体发光性能的影响.

concentration o 来自 托福考试词汇查询 - www.wolaishi.com/TOEFL/

[ 例句 ] But the inhibitation reduces when H _ 2 O _ 2 concentration and processing time adds.

[ 释义 ] 由此说明了VK3、CaCl_2和H_ 2O_2都抑制胞外POD活性,增强了胞内POD活性,诱导了细胞凋亡,H_2O_2的诱导作用最强.

concentration o 来自 托福考试词汇查询 - www.wolaishi.com/TOEFL/

[ 例句 ] The concentration of SiO _ 2 in the residue of fly ash Al _ 2 O _ 3 was 85 %.

[ 释义 ] 粉煤灰酸法提取氧化铝后渣中二氧化硅含量接近85%,是制备硅酸钠水玻璃的优质原料.

concentration o 来自 托福考试词汇查询 - www.wolaishi.com/TOEFL/

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