“它就像沸腾一釜在扭转，”他说。

"It's like boiling a kettle in reverse," he says.

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原甲酸三乙酯的投料量是过量的，没反应的原甲酸三乙酯回收后套用在下一釜反应中。

Orthoformic triethyl ester is of too much amount The unreacted orthoformic triethyl ester is recovered without appreciable impurities by distillation and can be used in the next batch.

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在微波辐射条件下，以水合肼、尿素和苯甲醛为原料，采用一釜两步法合成了苯甲醛缩氨基脲。

The experimental results showed that microwave irradiation could enhance the yield of benzaldehyde semicarbazone.

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