查询词典 integral

The Green's tensor in frequency domain for cylindrical layered media was deduced from the3-D Green dyadic for homogeneous media according to the propagation laws of waves in layered media,then the Green's tensor in spatial domain can be achieved with Fourier transformation,which is a singular integral of wave-number.

摘要根据分层介质中波的传播规律，由均匀介质中的三维张量格林函数得到频率域中柱状分层介质的张量格林函数表达式，经过傅立叶变换，可以得到空间域的格林函数，它是一个关于波数的奇异积分。

Besides, two representative temperatures, i.e. integral average temperature and mid-point temperature on cylindrical surface, are also calculated and discussed.

同时，对有限长面热源模型中的两种代表性温度，即热源面的积分平均温度和圆柱面中点温度分别进行了计算和讨论。

Two kinds of A/D integral algorithm were proposed.

利用微处理器实现时分补偿对瓦斯的检测，提出了2种A/D转换积分算法。

And I is the double integral of over D ,written ,or

这样就称f在D上可积，I称为f在D上的二重积分，记作或

Sunlight, season, skin pigmentation, vitamin D and 25-hydroxyvitamin D: integral components of the vitamin D endocrine system

阳光，季节，皮肤色素沉淀，维他命D和25-hydroxyvitamin D：维他命D内分泌系统的组成部分

D Write down the integral which represents the shaded area.

写出表示阴影部分面积的积分式

This paper stressed on the fact that electric displacement vector is a supplementary physical element,focused on a difference between D and D surface integral and on the condition of D=ε_0E_0 existence,and made a comprehensive and correct understanding for beginner.

着重说明了电位移矢量D是一个辅助物理量，强调指出D与D的面积分的意义不同，以及D=ε0E0成立的条件，从而使初学者对D建立起一个全面和正确的认识。

Dual integral A/D converter ; convertion error ; compensating resistance

双积分A/D转换器；转换误差；补偿电阻

The STLA, with its integral Class D amplifier, is the lightest self-powered high output line array module available at 190

内置智慧D类功放的STLA线阵列模组，仅重190磅，是最轻的有源高输出线阵列模组。

The key technologies include A/D conversion circuit with double integral, sign processing software for the microcomputer, eliminating zero excursion and the interference for digital filter, display precision adjusted and real-time graduation.

其关键技术包括：双积分A/D转换电路、单片机信号处理软件、消除零漂、排除干扰的数字滤波、显示准确度调校和实时标度变换等技术。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。