A fan (85) in the fan box (72) circulates heated air by discharging via openings (90) in a top and a bottom and taking in via an intermediate opening of a baffle plate (74).
Tribenuron-methyl is synthesized via ring-opening reaction, phosgenation and condensation.
经过开环、光气化、缩合等一系列反应制备了苯磺隆。
3
Please remember that the goods must be extremely well packed as until the opening of navigation some four months hence， and that all the shipments must be made via Seattle， and then train on here.