中板地

So we designed a adaptive synchronizing controller based on hereinbefore hardware environment: first a small magnitude reference signal r is outputted to system through the signal card (to ensure that the vibrating system works in a linear state), and this signal is sent to the moving coil of vibrator through the power amplifier, so vibration is produced through electromagnetic induction. Secondly the vibration signal can feedback to the data acquiring card in the servo system through the acceleration sensor on the Vibroseis reactor M〓 and the base-plate M〓, then the computer can get the current vibrating state y〓 of the coil of vibrator according to the feedback information from the data acquiring card, and give a real time comparing between the current state y〓 and the reference output y〓 of the set-in reference model with current reference input being r , then regulates the correlative controlling parameters according to the error e〓=y〓-y〓 till y〓→y〓, finally normal signal sweeping begins with a certain phase fixed. Meanwhile a synchronization signal for seismic signal record is sent to seismograph from synchronization signal outputting component in the Vibroseis system to perform the controlling process of synchronization of sweeping phases.

为此，我们基于以上的硬件环境设计了一个自适应同步控制器：首先通过信号发生卡对系统输出小幅度的参考信号r(从而保证振动系统工作处于线性状态)，信号通过前置放大器、功率放大器等送到激震器动圈，并通过电磁感应产生振动，振动信号通过可控震源激震器反应块M〓和基板M〓上的加速度传感器反馈给伺服系统中的数据采集卡，工控计算机根据采集卡的反馈信息，获取当前激震器动圈的振动状态y〓，并实时地将该状态与内置的参考模型在当前参考输入r下的参考输出y〓进行辨识，再将两者输出误差e〓＝y〓-y〓对系统的有关控制参数进行调整，直至y〓→y〓，最后在经过某一固定的相位后，开始信号的正常扫描过程，与此同时，由可控震源系统的同步信号输出部件向地震仪送出一地震信号记录同步信号，进而完成扫描相位同步控制过程。

In accord with the characteristics of singular integrals in boundary element method for solving problems of thick plates on two parameter foundation,all formulas for calculating singular integrals are set up by selecting the displacements and stresses which satisfy the governing differential equations in this paper,on the principle of virtual energy.

根据双参数地基上厚板弯曲问题边界单元法中所遇奇异积分的特点，选取满足该问题微分控制方程的位移及内力场，建立了全部奇异积分的计算公式，有效地解决了边界元法在该问题应用中高阶奇异积分的计算问题

The investigation shows that PT and reverse PT can strongly affect the profiles of the shock waves in the target,and the more complex interactions of the waves may cause abnormal spall.

分析表明，相变和逆相变过程会强烈地改变靶板中的冲击波波结构，各波系间复杂的相互作用将导致异常层裂。

During the period of dry, raw material is effected by stirring-up rake with gradient and hot air, it can be moved and passed through the dry region and to star valve and then discharge the finished product.

在干燥过程中，物料在带有倾斜度的抄板和热气流的作用下，可调控地运动至干燥机另一段星型卸料阀排出成品。

In this paper, the authors try, in light of the principle of the finite strip method, to give their ALGOL60 Programme for use on the D...

程序中运用了自动划分板条及处理边界约束的技巧。计算结果表明，其精度明显地优于有限单元法。

WBH of male swordtail fish sample can be checked in one same coated well and different coated wells to develop screening of environmental estrogen.

由于该方法可直接在1块或在不同的酶标板上准确地进行比较，因而可利用ELISA方法测定经诱导雄鱼整体匀浆液中ρ水平。

Using characteristic description to define High-Tech fields is mainly expressed by the summary of design thought, material application,structure treatment and construction properteis. In the 1950s, Early High-Tech school focused mostly on technology application and standardization ; in the 1970s, they emphasized industrial techinic, mainly using industrialized steal profil, glass, plastic, metal sheet and tightwire of mass production to display industry succes. In 1990s, late High-Tech school proposes durable developpement concept, to pay attention to tract, to bring importat emation factor into conception, to improve energy using rate, to protect ecological environment, and to creat comfortable environment.

借助一些特征的描述来界定高技术的范畴，主要表现为设计的思想精神、对材料的运用、结构的处理及施工特点等方面的归纳和总结。20世纪50年代早期高技派集中在高技术的采用与构件的装配化、标准化；20世纪70年代强调表现工业技术，主要使用工业化批量生产的型钢、玻璃、塑料、金属板和钢索这些材料炫耀工业成就。20世纪90年代后新高技派，倡导可持续发展理念，注重场所地域性，更发挥情感在设计中的重要因素，用高技术来提高能源使用率，有效地保护生态环境，营造舒适宜人的环境。

The system adopt new materials and new technology,including such equipment as the following:a stainless and carbon steel-fabricated converter and dice and doughnut-type gas heat exchanger with big-orifice baffles and wavy pipes,anodically protected stainless steel acid coolers and pipes,a heat-pi...

该系统在设计中积极采用新材料、新技术，成功地应用了不锈钢和碳钢相结合转化器、阳极保护不锈钢酸冷却器及管道、热管省煤器、新型大孔板波形管碟环式换热器、DCS控制系统等。2年多的生产运行情况表明，装置运行可靠，技术指标先进，生产控制指标达到或好于设计值，总转化率达99.87%，吸收率达99.99%。

Methods The logarithmically growing CEM cells cultured in vitro ( cell density 2 × 105/mL) were exposed to 0.1, 0.5, 1, 5, and 10 μM Dex, then were collected 24, 48 and 72 hrs later. Untreated CEM cells were used as Controls. The cell viability was determined by trypan blue dye exclusion.

方法将在体外培养的对数生长期的CEM细胞浓度调至2×105个/mL，接种于24孔培养板中，用终浓度分别为0.1，0.5，1，5，10 μM地塞米松处理，以不加任何药物的CEM细胞作为对照组，培养后24，48，72 h取样。

The POS terminal further includes a stocker where a continuous form with perforations for folding to be supplied to the printer is stacked, a form presser which is fitted slidably to the stocker and presses one end part of the continuous form, and sprockets which supply the continuous form stacked in the stocker to the printer.

POS终端还包括：放纸器，用于放置具有折叠分页孔的连续帐单纸并供给打印机；打印纸压板，可以滑动地安装在放纸器上，压住连续帐单纸的一端；以及链轮，用于将放置在放纸器中的连续帐单纸供给打印机。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。