In the coming 15 years, the pressure index on cropland will be further decreased.

未来15年耕地压力指数将进一步降低。

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To study the correlation of pulse pressure index (PPI) and pulse wave velocity (PWV).

研究脉压指数(PPI)与脉搏波速度(PWV)的相关性及对动脉硬化的评价价值。

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Objective To evaluate vascular sclerosis of hypertensive patients with pulse pressure index (PPI).

目的探讨脉压指数(PPI)评价高血压患者血管硬化的价值。

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That also helped to rally the Euro currency and pressure the dollar index.

FORBES: Comex Gold Rebounds Strongly on Bargain Hunting as "Outside Markets" Also Turn Bullish

Some hawkish comments from European Central Bank president Trichet, suggesting another ECB interest rate hike forthcoming, helped to boost the Euro currency and pressure the dollar index Thursday.

FORBES: Comex Gold Ends Lower on Better Investor Risk Appetite

The weaker dollar index limited selling pressure in the precious metals.

FORBES: Comex Gold, Silver End Weaker but Up from Daily Lows; Profit-Taking, Bargain-Hunting Both Featured