We could do it dy dx. Or, maybe we will want to actually make a change of variables to first shift this to the origin, x-2 you know, change x to x minus two and then switch to polar coordinates.
也可以dy，dx来划分，或者,对变量做一下变化，移动到原点，就是把x变成,然后再转化成极坐标。
As to the origin and the mechanics of total gas curve "negative shift" from TDC comprehensive logging unit, we have an initial recognition of it by theoretical and wellsite test.
对于TDC—综合录井仪的气测全量曲线“负漂”成因机理，通过理论分析和现场试验，有了初步认识。
Through the introduction of the origin, essence and classification of the theory of translation shift, it aims at emphasizing the necessity of translation shifts in the process of translation.
本文旨在通过分析研究卡特福德的翻译转换理论，详细介绍优秀英文译作在创作过程中所需进行的各种转换。
Through the introduction of the origin, essence and classification of the theory of translation shift, it aims at emphasizing the necessity of translation shifts in the process of translation.
本文旨在通过分析研究卡特福德的翻译转换理论，详细介绍优秀英文译作在创作过程中所需进行的各种转换。
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