稀土元素的氧化物离子产率随入射功率和采样深度增加，载气流速减小而降低。
Oxide ion yield of the rare earth elements (REE) decreased with the increasing of RF power and the sampling depth, or with the decreasing of carrier gas flow rate.
并对色谱柱、载气流速、柱温溶剂、进样量等色谱条件的选择，以及试样与溶剂的体积比的选择进行了实验。
The selection of chromatographic column, flow rate of carrier gas, column temperature, solvent, sample size and the column ratio of sample and solvent were experimented.
研究了重量空速、反应温度、载气流速、反应时间等工艺条件对甲苯、甲醇在碱性沸石上侧链烷基化反应的影响。
Effects of reaction conditions, including WHSV, reaction temperature, N_2 content and time on stream, were studied on side chain alkylation of toluene with methanol over basic zeolite catalysts.
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