这一点很重要，因为理论表明，当目标鱼种的生物量为其原始水平的50%左右时，渔场才能达到可收获的最大可持续产量。
That matters because theory suggests that the maximum sustainable yield that can be cropped from a fishery comes when the biomass of a target species is about 50% of its original levels.
只要黄海周围过高的捕捞力量的存在，小黄鱼资源很难得以恢复并达到最大持续产量。
As long as high fishing efforts exist in the Yellow Sea, it is impossible for the stock to recover and to reach maximum sustainable yield.
主要研究成果包括体长分析，世代分析方法，产量模型和卡塔尔国渔业的最大持续产量。
Main published work included length frequency analysis, virtual population analysis, production models, and maximum sustainable yield of Qatari fishery.
资源评估不仅仅是预测静止的最佳捕捞努力量和持续产量，而是评估鱼类和渔民对管理决策和其它变化的动态反应。
Stock assessment is not only to forecast the static optimum fishing effort and sustainable yield, but also to assess the reactions of fish and fishermen to management choices and other changes.
问题在于，该预测假定产量将持续上升，但实际情况可能并非如此。
The trouble is that the forecast assumes continued improvements in yields, which may not actually happen.
从现在到2030年这段时间，石油产量预计将增加25%，而可持续能源的来源将成为一个日益重要的话题。
With production anticipated to increase by 25% between now and 2030, sustainable energy sourcing will become an increasingly major issue.
那意味着，通过昂贵的销售商奖金、廉价信贷和极低折扣的组团销售，来保持高产量和持续销售。
That meant keeping production high and sustaining sales with costly dealer incentives, cheap credit and heavily discounted fleet sales.
工业品产量持续增长。
持续下跌的需求在供应链上磨得嘶嘶作响，导致全球的工业产量正以数十年来最快的速度下跌。
Around the world factory output is plunging at its fastest pace in decades as the consequences of slumping demand have rattled along the supply chain.
一旦建成运行，油沙矿在之后的30年或更长的时间里将持续不断的提供石油资源，而那些传统的油田的产量相对而言缺少可预见性。
Once up and running, oil-sands mines produce a steady flow of oil for 30 years or more, whereas the output of more conventional fields is much less predictable.
在经济衰退前夕，工人每小时产量的增长速度持续防缓。
On the eve of the recession the rate of growth in workers' output per hour was slowing.
当福克兰群岛的鱿鱼产量不断成长，阿根廷长期的经济衰退却一直持续。
While the Falklands have grown rich on squid, Argentina’s long decline has continued.
世界人口从1961年的30亿到2007年的翻了一倍多。当前农业产量(见546页)紧跟其上——并估算显示此情况将持续下去。
The world's population more than doubled from 3 billion between 1961 and 2007, yet agricultural output kept pace - and current projections (see page 546) suggest it will continue to do so.
油田的产出率正在下降，需求持续上升，而石油公司也正面临着提高储量和产量机会越来越小的窘境。
Production rates are declining at oil fields and demand continues to rise and oil companies are facing "dwindling opportunities to increase reserves and production."
俄乌特陶勒盖拥有已探明储量1.14亿吨，足够持续16年，但是那只是一个保守的估计，而且那只是一个矿的产量。
Ovoot Tolgoi has proven initial reserves of 114 million tons, enough to last up to 16 years, but that's a conservative estimate and that's just the one mine in production.
因此，当农业产量随着供给曲线不断攀升时，农产品价格也会持续性地迅速增长，最终给贫困国家带来灾难性的后果。
So, as agricultural output moves out along a rising supply curve, agricultural prices may continue to rise steeply for many years, with, eventually, calamitous consequences in poor countries.
“近年来商品价格持续走高导致了产量的增长和相应的肥料利用量的提高，”粮农组织肥料专家Jan Poulisse说。
"High commodity prices experienced over recent years led to increased production and correspondingly to greater fertilizer use," said Jan Poulisse, FAO fertilizer expert.
上世纪70年代，由于对核能持续增长的预期，矿工扩大产量，发电厂增加燃料储备。
In the 1970s miners expanded their output, and generating firms built up stocks of fuel, in anticipation of a steady expansion of nuclear power.
粮农组织指出，尽管产量增加，许多农业商品市场供应仍持续紧张。它强调低水平的库存可能不会很快得到补充。
Many agricultural commodity markets continue to be tight despite production increases, FAO said, emphasizing that low stock levels are not likely to be replenished quickly.
尽管产量前景强劲，严重的生产过剩将持续侵蚀钢铁业的收益。
Despite a stronger volume outlook, rampant overcapacity will continue to weigh on industry profitability.
经试验，新品种在正常情况下产量跟原品种相同，在持续的洪涝情况下却有两倍以上的产量。
In trials, the new plant produced as much rice as the original under normal conditions, but over twice as much after prolonged flooding.
2009年的产量下降了2.4%，美国人已厌烦了持续两年下降的就业率，而第四季度的数字明确显示最坏的时期已经过去。
For all of 2009 output declined by 2.4%, but for Americans weary from two years of declining employment, the fourth-quarter figure offers a clear signal that the worst is over.
人们担心，食品价格通胀可能飙升，假如小麦产量的大缺口持续存在，2008年的全球粮食危机可能重演。
There were fears that food price inflation could take off and that the world could even suffer a repeat of the 2008 food crisis should the big shortfall in wheat output persist.
为了跟上本国产量的增长幅度，石油工程学本科与研究生学位的招生人数也在持续增长。
To keep up with local production, enrollment at both graduate and undergraduate petroleum engineering programs has grown.
麦康奈尔说到，“随着高产量输出的持续增长，我们还是会继续关注介质传输和操作系统。”
"As throughput on high production presses continues to grow," McConnell says, "attention will continue to focus on media transport and handling systems."
麦康奈尔说到，“随着高产量输出的持续增长，我们还是会继续关注介质传输和操作系统。”
"As throughput on high production presses continues to grow," McConnell says, "attention will continue to focus on media transport and handling systems."
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