The technician who worked with the samples wore gloves and a gown, but no face shield, and may have been exposed.

Study on the Face Stability of Shield Tunnel with Large Diameter

大直径盾构正面稳定性研究

The connection between face shield and soil nailing determines the distribution of the axial force along length;

土钉和面层的连接方式决定着土钉长度方向上的轴力分布形态；

Safety and high efficient coal mining technology for coal mining face with shield supports

掩护支架工作面安全高效开采技术

The experiment has adopted INV303/ 306 fictitious instrument system and DASP mode analysis software, knowing the modal damping, modal rigidity, mode quality of the system. Have set up the vibration mechanics model in the tomato transportation of seven freedom degrees.

实验采用了INV303／306虚拟仪器系统和DASP模态分析软件，辩识系统的模态阻尼，模态刚度，模态质量等参数，建立了七自由度的番茄运输中的振动力学模型。

With analysis of professional software DASP, natural vibration frequency ( period)、 vibration mode and damping ratio of model structure with not sealing top and sealing top are obtained, and then analyze the the change rule of the dynamic characteristics after the two tests. 3.

利用专业软件DASP分析试验结果，得到模型结构在未封顶、封顶两种情况下的自振频率（周期）、振型和阻尼比，进而分析出两次试验后动力特性的变化规律。

Testing for buffer characteristics of the prototype of lunar lander with three legs are finished by means of piezoelectricity acceleration transducers and the DASP software which may collect and analyze data.

采用压电式加速度传感器及DASP数据采集与分析软件对三支撑月球着陆器原理样机缓冲性能进行了试验测试。

Moreover, the natural frequencies and modes information of the bare frame and the infilled frame were obtained by the analysis of the Dasp software.

通过dasp软件的分析功能，获取了空框架和填充墙框架的固有频率和相应的振型等模态信息。

The researches indicate that applying DASP technology in test instrument platform can extract high frequency signals with lower sampling rate effectively, and improve test precision and efficiency.

研究表明DASP技术融入测试平台能以较低的采样率有效地提取高频信号，提高了测试精度和效率。

The advanced DASP ( Data Alias-free Signal Processing) technology is applied to modern test instrument platform.

本文将先进的DASP（Data Alias-free Signal Processing）抗混叠信号采样技术运用到现代测试仪器平台中。

Application of DASP Technology in Modern Test Instrument Platform

DASP技术在现代测试仪器平台中的应用

It could also improve the resistance to various diseases. After applying 3 times, 1/ 500 dilutions efficacy against Phytophthora infestans was 74.0%, 1/ 300 dilutions efficacy against Phytophthora parasitica dast was 78.2%.

同时它可以明显提高番茄对病害的抵抗能力，抑制病害发生，且3次施药效果更佳，500倍液第3次施药后对番茄晚疫病防效达到74.0%，300倍液对绵疫病可达78.2%。

DAST is one kind of the most important materials in generating and detecting THz radiation for the reason that it has large optical nonlinear and electrooptic coefficients, low dielectric dispersion, large coherence length and ultra fast response time.

DAST因具有高的非线性和电光系数、低的介电常数、大的相干长度和快的响应时间等优点而在光整流法产生和探测THz波方面存在巨大应用潜力，目前对其研究较多。

It is concluded that the home-grown DAST is a kind of high-efficiency THz material, and could become a good THz emitter and detector after the improvement in growing process.

结果表明，国内新生长的有机晶体DAST的确是一种高效率的THz产生晶体，优化生长条件后将可得到更高的产生效率。

Heat conduction investigations of the Si bridge in infrared emitter using micro-Raman scattering Characterization of the Organic Crystal DAST as a THz Emitter

Si微电阻桥温度分布与热传导特性的显微Raman光谱研究利用国内生长的有机晶体DAST作为THz源的研究

Advancing the develop-ment of agricultural productivity which consists of social and natural productivity is the main aim of DAST.

提高由社会生产力和自然生产力构成的农业生产力的整体水平，是它业科技发展的落脚点。

Eliminating the restraint factor existing in the disposition of productive factors is the key point of DAST;

②清除或缓解生产要素配置中的“瓶颈”制约，是农业科技发展的突破口；

A DAST Programming for the Analysis of Ship Model Test Data

船模试验数据分析DAST程序设计

The paper discusses various factors which can affect DASY zeolites filtration and exchange by using filtration basic equation, mass transfer equation of heterogeneous reaction and zeolite exchange mechanisms in the production of DASY with vacuum belt filter, finally optimizes the belt filter's operation conditions.

本文应用过滤基本方程式、多相反应传质方程、分子筛交换机理等，分析了在DASY分子筛生产中影响真空带式滤机过滤和交换的因素，优化了带机的操作条件。

Methods Wistar rat and Kunming mouse were used as experimental animals. Osteoporosis was induced by orally given retinoic acid ( 70 mg · kg-1 · d-1) to the rats for 14 dasy.

方法：维甲酸（70mg·Kg-1·d-1）给大鼠灌胃14d，可导致大鼠的实验性骨质疏松，然后观察药物对动物骨密度的影响；

The LT50 decreased to 4.3 days at the dose of 134.9 conidia per mm2 from 5.1 dasy at 57.7 conidia per mm2. The results indicate that the millet cultures of Z.

在57.7～134.9个孢子/mm~2的接种剂量范围内，致死中时LT（50）从5.1天下降到4.3天。