本发明涉及基板载具，包含主支架、副支架、第一托盘和第二托盘。
The invention relates to a substrate carrying tool, comprising main brackets, auxiliary brackets, a first tray and a second tray.
介绍了一种套筒型补偿器———自平衡补偿器，它可用在热力管网中消除主固定支架的盲板力。
Describes a sleeve type compensator-the self balancing compensator, which can be used in heating networks to eliminate the blind flange force on primary fixing trestles.
分析了管路系统主固定支架的受力情况，指出了波纹管膨胀节选型的注意事项。
The forces of the main fixed support in water pipe system and items of selection of metal wave grain tube were introduced.
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