... 单位内容积 (bbls/ft)=井径 2in÷1029.4 单位环空容积 (Annular capacity) 单位环空容积 (m3/m)=7.854×10-5×(井径 2cm -管柱外径 2cm) ...
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Experimental result shows: 1 on the condition of multi-point explosive, capacity of annular booster explosive is higher than that of cylinder by about 57%.
实验结果表明：1多点起爆条件下环形传爆药柱的起爆威力较圆柱形提高约57%。
In the meantime, the paper introduces how to raise the effective viscosity in annular so as to enhance wellbore purification capacity.
同时介绍如何提高有效的环空黏度来增强井眼净化能力。
The strength of the steel plate and the annular steel plate is identical to the bearing capacity and elasticity of the tire of the same model.
钢板和环形钢板的强度以同型号轮胎的承载力和弹性相同为标准。
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