Elevator manufacturers are hoping to preinstall the doors, completely eliminating any chance that a worker might fall.
电梯制造商希望预先安装电梯门，以此完全消除工人摔落的可能性。
Preinstall option available on some systems.
在一些系统中可以使用预安装选项。
The teaching in fact is the preinstall and the production harmonious entity.
教学实际上就是预设和生成的和谐统一体。
The teaching in fact is the preinstall and the production harmonious entity.
教学实际上就是预设和生成的和谐统一体。
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