We also study the carton pressure of stack. ,calculate how many layer we can pile and how to make it safety.
本文还研究了纸箱堆码强度，计算堆码层数及如何保证其安全性。
参考来源 - 瓦楞纸箱强度及纸箱用于番茄保鲜的研究·2,447,543篇论文数据，部分数据来源于NoteExpress
What those early craftsmen had found by trial and error was that under pressure a pagoda's loose stack of floors could be made to slither to and fro independent of one another.
"那些早期的工匠通过反复试验发现：在压力作用下，宝塔松散堆叠的楼层可以彼此独立地来回滑动。
The oil pressure will force it up into the heart of the stack of valves.
石油的压力会迫使它上升到真空阀的中心处。
A smaller stack of dollars for compensation also puts pressure on the country's fleet of workers for retirement.
一小部分的补偿金的筹集困难也给人员退休带来了压力。
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