It is difficult to ensure the long-term stable oil supply heavily dependent on imported oil to meet domestic demand, and the price of oil is difficult to control. 大量依靠进口石油满足国内需求,很难保证石油的长期稳定供应,而且石油的价格也很难控制。
Essential oil compounds activation is reversible and dependent on the adenylate cyclase agonist Forskolin existence. 挥发油激活具有可逆的特点并依赖于腺苷环化酶激动剂Forskolin的存在。
This discrepancy is largely due to China becoming a net oil importer in 1993, making it dependent on foreign oil supplies and forcing its hand to hedge against price volatility. 之所以出现这种差异,很大程度上是因为中国在1993年就已成为石油净进口国,越来越依赖外国石油供应,因此不得不采取行动对冲价格波动。
But Saudi Arabia's increasing importance as the world's central banker of oil means the world is becoming more dependent on the kingdom than it was when oil prices were at record highs. 然而,沙特阿拉伯作为全球石油央行行长的重要性正与日俱增,这意味着,与油价处于创纪录高位时相比,全球对沙特的依赖性正越来越强。
Calculation of practical data from oil fields demonstrates that formation sloughing pressure is dependent on deviation angle and well azimuth. 对油田的实际资料进行计算表明,井壁坍塌压力与井斜度和井斜方位角有关。