查询词典 twice differentiable function

COV gathers can also be constructed through selecting traces from different cross spreads of a 3D survey. A simple and practical way of constructing COV gathers can he described as that 1 when a dominant receiver line direction is determined, the inline offset and crossline offset of every trace can be calculated; 2 the inline offset and crossline offset ranges fruit; negative to positive for the whole dataset can be well represented by the range of the receiver spread of a typical source; 3 the full range of inline offsets can be divided into several sob ranges using twice the source line spacing and the full range of crossline offsets can be divided using twice the receiver line spacing; and 4 one sod; sob-range inline offset and one such sob-range crossline offsets form a COV gather.

一个简便实用的构造COV道集的方法是：在给定检波线的走向后，计算出每一地震道的inline炮检距和crossline炮检距；用观测系统中一个具有代表性的炮点的检波器排列范围来确定整个数据的inline炮检距范围和crossline炮检距范围，用两倍的炮线间距把inline炮检距的范围分成若干份，用两倍的检波线间距将crossline炮检距的范围也分成若干份，一份inline炮检距和一份crossline炮检距就构成一个炮检距向量道集。

The International Monetary Fund, comparing 122 slowdowns in rich economies since 1960, finds that such double-barrelled recessions are typically twice as long and deep as normal slowdowns, and recovery takes twice as long and is only half as strong.

国际货币基金组织对比了1960年以来富裕经济体的122次经济放缓，结果发现，这种双重衰退的持续时间和深度一般是正常经济放缓的两倍，复苏需要两倍的时间，而力度只有一半。

I suddenly realized why the Lord liked him so much. Although we see him twice acting in a cowardly way and twice faithlessly, yet the Lord still made him the father of the nations because there was a genuine love about him, a love like God's own!

我忽然明白了神为什麼那麼喜欢他，即使在他两次胆怯、两次失去信心之后，神依然立他为众国之父，就是因为他心中有著真挚、毫不功利的爱，就像神那样！

During the strain cultured in shaking-flask under the above conditions, the MELs concentration reached 40.1 g·L〓, increased about twice as original. The inversion rate of soybean oil also increased from 30% to 57. 4%, and the specific yield of glycolipid was 1. 59g/g , near twice of original.

采用上述改良培养基进行MEL摇瓶发酵，MEL在发酵液中浓度为40.1g·L〓，比改良前提高了近两倍，豆油转化率则由原先的30％提高到57.4％，糖脂比产量为1.59g糖脂/g干细胞，比原先提高了近两倍。

I think we should do it at least twice in the space of each five- year plan, in the same way as the intercalary month in a lunar leap year turns up once in three years and twice in five

我看至少是象闰年、闰月一样，三年一闯，五年再闯，一个五年计划里头至少搞两次。

In this study the incidence of acute mountain sickness was 24% for people taking 125 mg twice daily, 21% for people taking 325 mg twice daily, and 51% for people taking placebo.9

在这项研究中，急性高空病的发病率在应用乙酰唑胺125mg2次/天组为24%，在应用乙酰唑胺325mg2次/天组为21%，在应用安慰剂组为51%[9]。

Methods A randomized,double-blind,double-simulant,parallel-controlled,multicentric study was carried out in 207 patients with bladder overactivity,patients received either tolterodine (2 mg twice daily)or oxybutynin (5 mg twice daily).

采用随机、双盲、双模拟、平行对照的方法对207例膀胱过度活动症患者进行托特罗定与奥昔布宁的对比研究，服药方法每日2次，每次托特罗定2mg或奥昔布宁5mg。

In this double-blind, placebo-controlled, parallel-group, multicenter study, 656 patients with type 2 diabetes requiring insulin treatment were randomized to receive additional preprandial subcutaneous injections of either placebo or pramlintide, 60 g three times daily, 90 g twice daily, or 120 g twice daily.

每天额外接受2次120 μg pramlintide注射的患者，其糖化血色素（HbA1c）从第26周的-0.68%持续降到第52周的-0.62%，效果明显大於安慰剂（P 。05），糖化血色素（HbA1c）降到以下8%者，120 μg治疗组占46%，安慰剂则仅占28%（P 。05）；第52周时，120 μg治疗组的患者也比安慰剂患者获得较好的体重控制（体重改变幅度：-1.4 kg vs。

According to the J.D. Power Initial Quality Study－which measures product quality using a metric called "PP100," or problems per 100 vehicles－China's industry average PP100 rating stands at 231, or almost twice the U.S. average of 124. And among domestic Chinese brands, quality problems are almost twice as frequent as in locally built international brands （an average of 368 PP100 for domestic brands, compared with 189 for international brands）.

J.D。 Power调研公司《新车质量调查》（依据被称为PP100的测评标准，即以每百辆车的问题数量为测评汽车质量标准）的结果显示，中国汽车业的PP100平均高达231，几乎相当于美国汽车业平均值124的两倍；而中国自主品牌汽车的故障发生率，也几乎是同样产自中国的外资品牌汽车的两倍。

Head turned the ball over twice after freaking timoeouts,Then he doesn't freakin box ray allen out twice

海德在暂停后失误两次，然后他两次都没有防住雷阿伦。

What was it that made you want to change sider ?

是什么使你临阵倒戈？

I don't know what he wants, but let's play along with him.

我不知道他要干什么，可我