飞机工程和控制系统的技术进步使情况发生了改变。
What has changed are technological advances in aircraft engineering and control systems.
重点叙述了宝钢在钢中碳、氮、氧、磷、硫以及夹杂物控制方面的技术进步。
The progress in control technology of carbon, nitrogen, total oxygen, phosphorus, sulphur as well as inclusions in steel is discussed at Baosteel.
近年来碳酸盐岩储层酸压裂推动技术进步的主要因素是能有效地控制酸液的滤失。
In recent years, controlling acid leaking effectively is key factor in improving acid fracturing technology in carbonate reservoir.
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