The influence of depreciation of bilateral exchange rate on bilateral trade balance appears Jcurve or W curve.
双边汇率贬值对双边贸易收支的影响可能呈现“J”曲线或“W”曲线形态。
3
Above an HDI of 0.9 or so, it turned up, producing what is known in the jargon as a "J-shaped" curve (even though it is the mirror image of a letter j).