2. Aluminium alloy occulting frame curtain wall has strict requirement for the properties and quality of silicone sealants. 铝合金隐框幕墙对硅酮密封胶的性能和质量有严格要求。
3. Important incidents occulting in station or system should be announced to all control rooms by the shift engineer in charge. 值长应将电厂或系统发生的事故通告所有的控制室。