The reaction conditions on oxidation of 2 - methylpyridine to 2 - acid by oxidation of potassium dichromate were studied. 研究了以2-甲基吡啶为原料,以重铬酸钾为氧化剂,利用化学氧化法合成 2- 吡啶甲酸的反应条件.
One year after the crash, the markets remain mired in a deep malaise.股市崩盘一年后，市场仍是萎靡不振。The hundred and twenty ton aircraft was deeply mired.这架一百二十吨重的飞机深深地陷了进去.The United States became mired in wars in Iraq.美国深陷伊拉克战争泥潭。Ins...
It is real power ( kW ) divided by the power factor ( PF ) .它等于有功功率 ( kW )除以功率因数.KW series thermal protectors are applicable for more than 5000 cycles.KW系列保护器在下述条件下可分断接通保护5000次.And China may get 70 million KW account for...
The captain remained stolid and determined.上尉坚定不移地站在那里.She felt more sympathy for Neil's sombrely stolid manner than she ever had before.她比过去更同情尼尔忧郁而执拗的举止了。He conceals his feelings behind a rather stolid manner.他装作无...