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Based on the chain rule techniques, AD seeks first or higher order derivatives of functions represented by a group of dependent program procedures and extended files, the so-called original model, through a number of code-to-code transformings under a series of differential rules.

基于链式求导法则的自动微分方法通过改写原程序模式代码，依赖机器自动构造不同的微分模式，来分析求解函数的一阶或高阶导数，即在一系列预定微分规则下对不同程序对象做从代码到代码的自动微分转换。

In August2002, a group of friends who regularly attended classical music performances together organized a concert of chamber music before they moved on to university, and thence Ensemble ad Infinitum was born.

二零零二年八月，数个经常相约一同欣赏音乐会的朋友，趁高考过后、大学之前的悠长假期搞了一场室乐音乐会，无限乐团自此组成。

If you want to renew your ad automatically - you guessed it - check that box.

如果您想更新您的广告自动-你猜到了-检查框。

Chinese started to celebrate the Lantern Festival from the Han Dynasty (206 BC - 221 AD).

元宵节的传统可以追溯到西汉时期，像其他的

Uttama chola though not a selfish or corrupt monarch, did not rule for long and died in 985 AD and very much in line with the wishes of people Raja Raja ascended the throne.

一流奉献佐拉虽然不是自私或损坏的君主，不排除长期和公元985人死亡，非常符合人拉贾拉贾登基的愿望了。

At present, pharmacological treatment of AD is still in the stage of symptomatic, mainly cholinesterase inhibitors.

目前还是处於症状改善的阶段，而以乙醯胆碱抑制剂为治疗的主流。

From 14 to 17 years of the chronological age, boys with ad...

如用肩胛下ST/(肩胛下ST+肱三头肌区ST)的比例表示的话，那么14—17岁时，相对骨龄早者与相对骨龄晚者相比，前者有较明显的向心型分布倾向。13—14岁时，早组的上述比值的年增长明显大于晚组。

METHODS: Inexpensive quinine and cinchonine were transformed to 9NH2quinine and 9NH2cinchonine, which reacted with 4chlorobenzoyl chloride to afford 2 novel chiral ligands. The AD reactions of olefins were performed in H2OtBuOH (1∶1) using the 2 ligandsK2OSO24 as catalysts.

以价廉易得的奎宁和辛可宁为原料，经过结构转换得到9氨基奎宁和9氨基辛克宁，进而与对氯苯甲酰氯反应制得两种新型手性配体，并将其用于锇催化的烯烃的不对称双羟化反应。

She started delivering papers on New Year's Day, when they were bulging with post-holiday ad circulars and sales supplements.

她开始宣读文件，新的一年的一天，当他们鼓胀后假期广告的通告及销售的补充。

At the fore front of the pioneers in the field was the Greek mathematician and philosopher Claudius Ptolemaeus (c. AD 90~168), more popularly known to history as Ptolemy.

在绘制地图这一专业先驱者当中，处于最前列最古的地位的就是古希腊的数学家兼哲学家克劳迪·托勒密尤斯，即历史上广为人知的托勒密。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。