...词］ 建筑物 合理使用寿命 混凝土结构设计 设计使用年限 设计规范 [gap=591]Keywords:buildings； adequate service life； concrete structures design； design life； design codes ..
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As the main clutch, the steering clutch is an wear part in track type construction machines. It should pass through thermal load calculation to ensure adequate thermal capacity and service life.
转向离合器同主离合器一样，是履带式工程机械的易磨损部件，应进行热负荷计算，以保证其有足够的热容量和使用寿命。
The vaporization is adequate, and temperature of the electric hot tray is uniform, thereby enabling the steam electric iron to have the advantages of stable steam output amount and long service life.
汽化充分，电热盘温度均匀，从而使得蒸汽电熨斗具有蒸汽量输出大小稳定、使用寿命长的优点。
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