But the GSCI, which has a heavy weighting in oil, is showing a loss this year.
但是高盛商品指数，由于石油在其中所占的巨大权重，今年也显示出下跌趋势。
2
Method Large diameter oil tube and weighting rod are adopted to decrease lifting resistance of crude oil and to increase lowering-in energy of the string.
方法采用增大油管直径和下加重杆技术，来减少油流上升阻力和增大杆柱下行动力。
3
Since the purpose is to minimize alteration, a fresh core has often been drilled with a bland mud, either water - or oil-base, but with a minimum of chemical additives and weighting material.