adj.中低
Flat seating faces for low and medium pressures. 適用于中低壓力的平面閥座表面。
This paper reports the analyses of the low carbon compositions in fusel oil by using gas chromatographic technique. 本文報(bào)導(dǎo)氣相色譜法分析測定雜醇油中低碳成分的測定條件和分析的準(zhǔn)確度的評價(jià)。
