dark trace tube 暗迹电子射线管 ; 暗迹阴极射线管 ; 黑迹管 ; 暗迹管
dark-trace tube 暗迹管
color trace tube 彩色显象管
fire trace tube 火探管
colour trace tube 彩色显像管
cathodochromic dark-trace tube 阴极射线致色暗迹管
colour-trace tube 色迹记录管
concave trace tube 凹形伴热管
A glass tube containing catalyst 401 which is used as a color indicator for trace amount of oxygen was connected with the sample tube to monitor the purity of carrier gas during operation.
为了检测载气的纯度，在样品管进口直接连接装有变色的401型脱氧催化剂的检测管。
Determination of trace Ba in water by graphite furnace atomic absorption spectrometry is studied. The optimum graphite tube, heating programs and matrix modifier are investigated.
通过一系列条件试验，研究了石墨炉原子吸收光谱法测定水中微量钡的石墨管类型、最佳加热程序和最佳基体改进剂等。
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