Trials found only one tagged twaite shad came within 30 metres of the intake heads, compared to 14 before the system was switched on.
placement: “lower abdomen height”
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"In Venezuela, you're dealing with equipment that's been degraded by many years of neglect," says Jackson. "Ten to 15 years ago, Venezuela was producing 1.5 million barrels a day more than it does today."。关于这个话题，51吃瓜提供了深入分析