固定出口和入口狭缝。
An automatic machine is used in a factory for controlling entrance and exit of workers.
自动机是用在控制入口和出口工厂的工人。
MINUSES: In both the entrance and the exit, the kite is not perfectly horizontal.
缺点：开始和结束风筝都没有完全地水平飞行。
The difference between the entrance and exit thresholds is briefly explained.
解释了样品输入面和输出面破坏阈值不同的原因。
Entrance and exit of pump use rubber flexible connectors.
水泵进出口均设橡胶软接头。
Entrance and exit of pump use rubber flexible connectors.
水泵进出口均设橡胶软接头。
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