A scientific analysis of operations of this type requires solving the relevant equations of continuity, motion, and energy (i. e. conservation equations).
返种典型操作的科学分枂需要解决相关连续、运转和能量平衡(如守恒方秳)。
The ready mix concrete supplier shall at all times maintain sufficient quantities of each type of aggregate considered by the Engineer to be sufficient to ensure continuity of work.
那些专门提供调制好的混合混凝土的供应商应该随时保证每种类型有足够的数量，同时工程师需要提供充足的供应总量的数据来确保工程不间断运行。
The ready mix concrete supplier shall at all times maintain sufficient quantities of each type of aggregate considered by the Engineer to be sufficient to ensure continuity of work.
那些专门提供调制好的混合混凝土的供应商应该随时保证每种类型有足够的数量，同时工程师需要提供充足的供应总量的数据来确保工程不间断运行。
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