like to be open at this time, you can loosen the valve cover thread Vacuum pumps and a half circle to circle, remove the stem stress, and then board the hand wheel. (B) Note Temperatures above 1,200 ℃ valve, as installed at room temperature, and normal use, temperature, thermal expansion bolts, clearance increased and must be tightened again, called "hot tight", the operator should pay attention to this a work, or prone to leakage. 2, when the cold weather, long-closed stop valve, the valve should be water exclusion.
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structural safety and normal use 结构安全及正常使用
Article 8 Party a shall ensure safe and normal use of the house and its internal facilities.
第八条甲方应保证房屋及其内部设施的安全及正常使用。
Therefore, detection and inspection of bridges have become one important guarantee that ensures safety maintenance and normal use of it.
于是桥梁结构的检测、监测就成为结构安全养护、正常使用的保证措施之一。
Therefore, detection, evaluation and reinforce of Bridges have become one important guarantee that ensures safety maintenance and normal use of it.
于是桥梁结构的检测、评估和加固就成为结构安全养护、正常使用的保证措施之一。
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