Comparative studies about the activity of domestic trypsin and foreign normal temperature bating enzyme in different conditions were described. 作者對國產(chǎn)工業(yè)胰酶和國外常溫軟化酶進(jìn)行了不同條件下的活力測定對比研究，并且進(jìn)行了軟化應用對比實(shí)驗。
Comparative study was conducted on a naturally injected aspirated high speed D.I. diesel engine to investigate the effects of diesel and methanol injection on the smoke. 在一臺高速非增壓直噴柴油機上對進(jìn)氣噴甲醇和純柴油的瞬態(tài)煙度排放兩種情況進(jìn)行了試驗對比研究。
