数字组

If the diamond—shaped filter banks are error—free, the fan filter bank is also error—free.

若采用无失真的菱形数字滤波器组，扇形数字滤波器组的重建误差为零。

According to the demand of high magnetic field power supply, reference is increased with a set ramp rate and stops at a set stable value, so reference system is composed of digital setting and digit to analog converting circuit. But the stability of reference is mostly guaranteed by the performance of D/A circuit, so D/A circuit is particularly studied in reference system. The scheme of D/A circuit, the selection of DAC and its voltage reference, hardware anti-jamming design and PCB design are discussed in detail, and software of remote control and PLC are discussed in brief. Zero-flux DC current transformer well satisfies the demands of the high stability of Load current detection unit, so the principle of zero-flux DC current transformer is analyzed; in the mean time a project which detects the long term stability is designed. During 8 hours, analog signal which is detected with high precision digit multimeter is recorded in computer at 1HZ frequency by GPIB communication. The drift error source and related parameters are explained in the compare-amplify part. Detailed subtraction circuit is designed; also amplifier chip and periphery components are selected and verified according to the theory of error analysis.

根据强磁场电源的需求，参考源应按照软件设定的斜率逐渐上升到设定稳态值，则参考源系统应由数字给定和数模转换电路两大部分组成，而参考源的稳定度主要依靠完成数模转换功能的模拟电路的性能来保证，因此本文对参考源系统的研究以数模转换电路为重点，分别从电路方案的确定、数模转换芯片及其基准电压源的选取和验证、电路板硬件抗干扰和PCB设计几方面进行了论述，然后对数字给定部分的远控组态和PLC程序设计作了简要介绍；采用零磁通原理的直流电流转换器很好地满足了对负载电流检测单元高稳定度的需求，本文详细分析了零磁通检测的原理，并在选定此种类型电流转换器的基础上设计了一套检测长期稳定度的方案，8小时内以1秒为采样周期，通过计算机Labview程序和高精度数字电压表的GPIB通讯，将被高精度数字电压表数字化后的模拟信号采样值连续记录至计算机中；比较放大环节简要阐述了漂移产生的原因和相关参数指标，确定了具体的减法电路形式，并根据误差分析理论对运算放大器和外围元器件进行了选取和验证。

We have to change our digit group specification twice.

我们必须改变我们的数字组规格两次。

In a TDMA system, a discrete group of digits transmitted by a single ''.

在时分多址系统中，由地面站传送的一个分立数字组。

Features - FSK and DTMF dual mode CLIP (Calling Line Identification Presentation)- Stores up to 50 calling numbers, up to 20 digits for each number*- Stores up to 3 last dialed numbers, up to 24 digits for each number*- Stores up to 50 PSTN Phone Book numbers, up to 12 characters for each name and 24 digits for each number (while the LCD displays the maximum of 12 digits)*- LCD displays calling and dialing number - Barring numbers setting (up to 5 numbers)*- Key lock setting - Hot call setting*- Call transfer of external calls*- Internal calls*- Three-way Conference Call*- Various ring melody (up to 9 for option)- Ring volume adjusting (up to 9 levels)- Handset earpiece volume setting (up to 9 levels)- Microphone mute - Delete single or all records in PSTN Phone Book*- Redialing and preparation dialing functions - Paging function to locate the handset easily from base station - Clicking key tone on or off - Supports GAP function - Speakerphon

特点－FSK和DTMF双模的CLIP－能存储多达50组来电，每组来电能够存储20个数字*－能够存储最近的3个已拨电话号码，每个号码能够存储24个数字*－能够存储50个PSTN电话簿号码，每个名字有12个字符，每个号码有24个数字（而LCD最多只能显示12个数字）*－LCD来电显示和去电号码－不包括号码设置（5个号码）*－键盘锁设置－热键设置*－外部来电转接*－内部呼叫*－三方电话会议*－多种铃声（一共有9种可供选择）－音量调节（一共有9个级别）－话机听筒音量设置（一共有9个级别）－静音－在PSTN电话簿内删除单个或者全部记录*－回拨和准备拨号功能－寻呼功能能够简单的从话机座定位话筒－开启或关闭滴答声－支持GAP功能－免提

Forty Wistar neonate rats of 3 days old were subjected to neurotomy of right sciatic nerve, and then randomly divided into 4 groups with 10 animals in each group.

出生3d Wistar乳鼠40只，行右侧坐骨神经切断术，按随机数字表法分为肢芽提取液非运动组、肢芽提取液运动组、生理盐水非运动组、生理盐水运动组，每组10只。

Methods 40 patients are divided equally into the lactated Ringer's group and the acetated sodium grouprandomly,adapting the combined intravenous and inhalation general anesthesia.

40例择期手术患者按随机数字表随机分为乳酸钠组和醋酸钠组，每组各20例，采用静吸复合全身麻醉。L组术中输入乳酸钠林格液，A组术中输入醋酸钠林格液，两组术中不

Methods 40 patients are divided equally into the lactated Ringer's group and the acetated sodium grouprandomly,adapting the combined intravenous and inhalation general anesthesia. The lactated Ringer's gis given in group L and the acetated sodium in group A. Neither groups are cross-given other crystal solution during operation, polygeline is the only colloid solution in both groups.

40例择期手术患者按随机数字表随机分为乳酸钠组和醋酸钠组，每组各20例，采用静吸复合全身麻醉。L组术中输入乳酸钠林格液，A组术中输入醋酸钠林格液，两组术中不交叉输入其他晶体液，输入胶体液均为菲克血隆。

EyelinkⅡis used in experiment 3 to study the external and internal refence fame inmental rotation. The result is that presenting a number with an external referenceframe, subjects\' internal reference frames can be revised. At the same time, thesubjects tend to use frame rotation.

研究四的两个实验分别采用了汉字数字与阿拉伯数字以及经典的心理旋转的三维立体图形探讨了心理旋转中的表象表征与命题表征的转化，发现表象表征的容量组块是4，在4以下时，表象表征占主导地位，心理旋转采用表象的匹配，但在容量组块超过4时，命题表征的优势显现了出来，对于刺激物的整体加工的效果更为明显。

Ninety male SD rats of clean grade were randomly divided into the ischemic reperfusion group （n=18）, the normal saline group （n=18） and Danshen treatment group （n=54）, and the Danshen treatment group was redivided into 3 subgroups according to 3.0 g/kg, 10.0 g/kg and 15.0 g/kg with 6 rats in each sub-group.

清洁级健康成年雄性SD大鼠90只，利用随机数字表将动物分为缺血再灌组18只；生理盐水组18只；丹参治疗组54只，丹参治疗组又分为3.0，10.0，15.0g／kg3个亚组，每组6只。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了