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Aim at the problem of high frame rate camera has not analog output and can not display on general monitor,a system that is used to display the image for high frame rate camera in real-time is designed.

针对高帧频数字摄像机没有模拟输出，不能在普通的视频监视器上显示的问题，研究设计了一种用于高帧频数字摄像机的实时显示系统。

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。

The results are as follows: 1 mean length and weight tend to increase while dominant length and weight groups are noted to be increasing from Oct. 2004 to Sep. 2007; 2 by using length-weight formula, calculated weight value at the same length is higher for track-data than that for background-data; 3 growth parameters of L∞, W∞ and K respectively increase from 140.5 mm, 36.5 g and 0.28 a-1 to 186.0 mm, 118.5 g and 0.36 a-1 after artificial reef deployment; 4 appreciable increases are noted in body length and weight growth rate after artificial reef deployment, and inflexion age of weight growth increases from 2.55 to 2.58 years after artificial reef deployment; 5 there is an increase in critical biomass age from 3.21 to 3.77 years after artificial reef deployment; 6 there is a decrease in total instantaneous population mortality from 1.065 to 0.75 per year after artificial reef deployment; and 7 the overall population biomass of small yellow croaker stands at 131.5 tons.

结果表明：投礁后小黄鱼的平均体长和体重均呈上升趋势，优势体长组和体重组均向高值移动；同等体长情况下由投礁后体长体重关系式估算的体重比用投礁前的体长体重关系式估算的值大；投礁后小黄鱼个体生长方程的参数 L∞、W∞、K 值分别从投礁前的140.5 mm、36.5 g和0.28 a-1增加到186.0 mm、118.5 g和0.36 a-1；投礁后体长与体重生长速度与投礁前相比有所增大，且体重生长的拐点年龄从投礁前2.55 a提高到2007年的2.58 a；小黄鱼种群生物量增长的临界年龄从投礁前的3.21 a提高到3.77 a；小黄鱼种群的总瞬时死亡率从投礁前的1.065 a-1减小到0.75 a-1；鱼礁区小黄鱼资源量约

Where the month rental income derived from individuals' leasing of houses for non-residential purposes is at or above the threshold of business tax of our city, various taxes shall be calculated and levied at the comprehensive levy rate of 12%, including business tax, urban maintenance and construction tax, additional education tax, house property tax, urban and township land use tax, stamp tax, and individual income tax; when a taxation authority or a tax withholding agent entrusted by taxation authority (hereinafter referred to as the levier) pays the aforesaid taxes within the stipulated time limit, the tax shall be paid on a consolidated basis to a bank by tax categories in the light of business tax item (service sector – lease sector), house property item and individual income tax item.

个人非住房出租月租金收入在我市营业税起征点以上的，按照12%的综合征收率计征各项税费，包括营业税、城市维护建设税、教育费附加、房产税、城镇土地使用税、印花税、个人所得税；税务机关或税务机关委托的代征人在按照规定期限解缴上述税费时，应按营业税科目、房产税科目和个人所得税科目分税种向银行汇总解缴。12%综合征收率的入库比例：个人所得税科目占1%，营业税科目占5%，房产税科目占6%，并向纳税人填开包括个人所得税、营业税和房产税的完税证明。

Like multicarrier modulation, the high rate data transmitted at first by serial-to-parallel convert, then the low rate data streams are spreaded spectrum by a set of orthogonal sequence.

相似于多载波调制，传输的高数据率首先进行串-并转换，然后对转换后的低数据流用正交序列进行扩频调制。

With a Cahoot credit card, that has an interest rate of 11.8%, the cost would be 40, while borrowing through HSBC at 13.9% would cost 38 despite the higher interest rate.

与cahoot信用卡，有一个利率为11.8%，其成本将是40英镑，而借款透过汇丰银行为13.9%，费用38英镑，尽管高利率。

A comparison of photosynthetic rate, transpiration rate, w ater use efficiency, stomatal conductance, intercellular CO 2 concentration and vapor pressure deficit at the leaf surface between Poaceae C 4 plants (Chloris virgata and Setaria viridis) an d Chenopodiaceae C 3 plants (Chenopodium album and Chenopodium glaucum) under the simulated photosynthetic radiation was conducted in this st udy.

利用人工模拟光源研究了两种 C4 光合途径禾本科植物和两种 C3光合途径藜科植物的光合速率、蒸腾速率、水分利用率、气孔导度、胞间 CO2 浓度及叶面饱和蒸气压亏缺随模拟光辐射增强的变化规律及 Gs、Ci、Vpdl对 Tr和 WUE的影响。

At Hcy/Au electrode, there were electrocatalytic responses of DA and E with ΔEp 57.5mV and 63.5mV, respectively. The standard rate constants k〓 were calculated as 2.1×10〓 cm s〓 and 1.6×10〓 cm s〓 corresponding to DA and E. The electron transfer number n〓=1 was achieved, which revealed that the 2e transfer of DA and E is not completed by one step at the electrode. Because AA also displayed electrocatalytic behavior at Hcy/Au electrode, DA and E can be determined in presence of AA.At Hcy/Au electrode, a pair of very stable and well-defined redox waves of Mb were obtained.

在Hcy/Au电极上分别得到多巴胺、肾上腺素的一对可逆的氧化还原波，求出两者的电极反应速率常数分别为2.2×10〓cm s〓和1.6×10〓cm s〓，推导出在两者的电极反应过程中均存在一个自由基并且它的形成决定了整个电极反应的速度；由于抗坏血酸在此电极上也具有电催化响应，可以在抗坏血酸存在下对多巴胺和肾上腺素进行测定。

Except in a few extraordinary cases—Hong Kong, Macao, parts of eastern Germany—fertility has not fallen to the very low rate of 1.0. In most rich countries, the rate stabilises at about 1.3 and begins to rally.

除了几个少数极特殊的地区，比如，香港，澳门，东德的部分地区，其替换生育率最低比率并没有下降到1.0以下，在多数的富裕国家里，其生育比率基本稳定在1.3左右，并且开始有止跌回升的迹象。

The boundary condition that the surface of the crust is kept at a constant temperature of 25℃, leads to relatively less obvious variation of temperature in the underground no deeper than 2 kilometers, so that the calculated strain rate is less than 10〓(normal geological strain rate is 10〓～10〓).

由于地表的边界效应，在深度小于2km的地壳里，温度变化相对不急剧，一般不出现大于10〓应变速率(典型的地质应变速率为10〓～10〓)。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。