查询词典 D.D.

Based on the A / D converter the basic principles and characteristics of the broadband A / D converter technology and A / D converter, the choice of a number of exploration and study.

本文基于A/D转换的基本原理和特性，对宽带A/D转换技术和A/D转换器的选择进行一些探讨和研究。

Because of harsh environment that strapdown inertial guidanc e system works in, the conventional accelerator data acquisition systems such as I/F converter and A/D acq uisition have limitations in testing. Therefore, a new method which combing I/F and A/D based on PC104 bus was pro posed, and an ADAS module with the advantages of I/F and A/D schemes was designed.

加速度计是捷联惯导系统的核心部件，由于捷联惯导系统恶劣的工作环境，通常以I/F转换或A/D 采样方案设计的加速度计数据采集系统在测试中均有局限性，因此基于PC104总线提出I /F和A/D相结合的方法，设计了高精度加速度计数据采集系统，该系统同时具有I/F和A/D方案的优点。

The admissible input of 2-D linear discrete singular general model is discussed more deeply, some very effective new criteria for the 2-D singular general model to accept all the input sequence have been developed, and a new algorithm that determines the admissible input sequence of the 2-D singular systems has been proposed.

在线性广义2-D系统可解性方面，首先研究了线性广义2-D连续—离散系统的可解性问题，给出了可解的条件，并给出了等价的判别条件；其次深入研究了线性广义2-D离散系统的允许输入序列问题，给出了系统接受所在区域上的所有输入的新的非常有效的判别方法以及确定系统允许输入序列的新的方法。

Let K be the 3 cyclotomic field, Esubscript D(superscript λ: y^2=x^3-2^4 3^3 D(superscript λ) be an elliptic curve defined over K, where D∈K is a square-free algebraic integer and λ∈Z.

设K为三次分圆域，E下标 D(上标λ：y^2=x^3-2^4 3^3 D为定义在K上的椭圆曲线，其中D为K中无平方因子的代数整数，λ∈Z。

In Ugaritic and Arabic there are a few extra consonants: Ha, h for another kind of palatal "h" already mentioned; Ghain, g or g for another kind of Ayin; d and d for other kinds of "d"; z for another emphatic sibilant; and s often used for sh.

"在乌加里特文和阿拉伯文有一些额外的辅音：哈，小时，另一种腭的" H "已经提到； Ghain ， g或克的另一种Ayin ； D和D的其他种类的" D "类；另一强调sibilant ；和s常常被用於"上海。

"The best indicator of a person's vitamin D status is the blood level of a vitamin D compound called 25-hydroxyvitamin D ," said Babette Zemel, Ph.D., a nutritional anthropologist at Children's Hospital and primary investigator of this study.

"的最佳指标，一个人的维生素d地位，是血服用维生素d化合物称为25 -羟丁说：" babette泽梅尔博士，营养人类学家儿童医院和基层调查这学习。

Bandicoot of manhood of male of SD of methodological cleanness class 70, separate group of the 6 H after to contrast normally form of group, art of make use of sb, head straightens dead, 24 H group, 3 D group, 5 D group and 7 D group randomly.

方法清洁级SD雄性成年大鼠70只，随机分为正常对照组、假手术组、脑梗死后6 h组、24 h组、3 d组、5 d组和7 d组。

We proposed the simplest structure of 2-D bilinear transformation digital circuit, we proposed four approaches of the realizations:(1) Realization of 2-D discrete domain difference equations;(2) 2-D FFT realization;(3) Digital hardware implementation;(4) by 2-D recursive digital structure to realize them.

在第七章，我们则重点研究了二维数字滤波器的实现问题。我们对第六章提出的2-D双线性变换电路又作了进一步的简化，获得了一种最简结构的二维双线性变换数字电路，该电路仅有二个延时器和一个乘法器。在第七章里，我们提出了二维跳耦型数字滤波器的四种实现方法：(1)二维时域差分方程实现；(2)二维FFT实现；(3)数字硬件实现，(4)用2-D递归数字结构实现。

Trivia: Kidd's farewell speech: My name was Captain Kidd, when I sail'd, when I sail'd, And so wickedly I did, God's laws I did forbid, When I sail'd, when I sail'd.

花絮：基德的告别演说：我的名字是基德船长，当我sail'd ，当我sail'd ，所以我没有坏透，上帝的法律我没有禁止，当我sail'd ，当我

We reviewed the average requirement and the recommended intake of vitamin D in children, adults, elderly and pregnant and parturient women, and encouraged to increase the recommended intake of vitamin D; We also reviewed the risk of high-dose vitamin D intake and suggested to raise the maximum tolerable intake made by American CRN. Finally, we propose that Chinese Nutrition Society will consider to increase the UL of vitamin D from 20 μg to 50 μg.

本文综述儿童、成年人、老年人和孕产妇的平均需要量和推荐摄入量，鼓励增加维生素D的推荐摄入量；综述美国营养责任委员会对高剂量维生素D摄入风险的再评估，提高可耐受最高摄入量；最后建议能否考虑将中国维生素D的UL由20μg提高到50μg。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。