据估计，每立方米排气口所排出的物质中，就有350毫克的有机颗粒物质被平流输送到排气口区域。
Estimates suggest that for every cubic meter of vent discharge, 350 milligrams of particulate organic material would be advected into the vent area.
这些钢珠的密度是，每立方米7800千克。
These steel ball bearings have a density of about 7,800 kilograms per cubic meter.
航天器上的仪器显示，月球表面每立方米的土壤含水量可达约一公升。
Instruments aboard the spacecraft suggest that a cubic metre of soil on the lunar surface could hold around a litre of water.
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