The addition reaction with hydrogen cyanide is base - catalysed.与氰氢酸的加成是碱催化的.Increasing the system pressure increases the concentration of ammonia and hydrogen cyanide.增大体系压力能使氨和氰化氢的浓度升高.The addition of steam inhibits th...
Missilemen were busy at launching pads and hangars, preparing for two new moon shoots.火箭专家们在发射台及飞机棚中忙着准备两次月球火箭之发射试验.The Italian government was preparing to dispatch 4,000 soldiers to search the island.意大利政府正准备派遣 4,000 名士...