是否有足够的作业及储存空间，使生产处于安全和卫生的条件下进行？
Does the factory site allow sufficient working space and storage capacity to enable all operations to be conducted under safe and necessary hygienic conditions?
即使在如此限制的环境中，迷你挖掘机因其机械臂摆仅需很小空间而确保了作业的安全性。
Mini excavators assure safety in the work even under such a constraint as they need only a limited space for a swing.
然而，避难硐室或救生舱就是这样一个在煤矿发生事故时为无法及时撤离的井下作业人员提供一个躲避灾难、赢得救援时间的安全的密闭空间。
However, refuge chamber or rescue capsule is a closed space, it for the underground work who cannot evacuate provide a avoid disaster in time and win the rescue time when coal mine accident.
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