... chemical shim 化学补偿物 chemical shutdown 化学停堆 chemical tracer 化学示踪剂 ...
双语例句
1
Interrupting power even for a few hours sometimes forces factories to shut all day, says the boss of a large chemical firm. After a shutdown it can take hours to recalibrate machinery.
一家大型化学公司的老板说，有时停电几小时将使工厂停产一天，连重新校准机器就要花上几个钟头。
2
Chemical processes usually have many transitions, e. g., startup and shutdown, transferring between different modes.