实验式

In order to save energy and better control pollutant ,we design a new type of exhaust hood—— air curtain exhaust hood .

为了节能和更好地控制有害物，我们设计了一种新型排风柜———气幕式排风柜，我们对送风口为条缝型送风口的气幕式排风柜进行了理论和实验方面的研究。

A distributed amplifier of the low-pass type can easily be constructed to have a uniform frequency response from audio frequencies to fr...

由实验结果证明，采用m导出式低通滤波器所构成的仿真线的分布式放大器，实较用常K式者，具有更佳的相移特性和频率特性，这与理论上的分析是一致的。

A distributed amplifier of the low-pass type can easily be constructed to have a uniform frequency response from audio frequencies to frequenc...

由实验结果证明，采用m导出式低通滤波器所构成的仿真线的分布式放大器，实较用常K式者，具有更佳的相移特性和频率特性，这与理论上的分析是一致的。

Thus the good accuracy of developed correlation is proved by comparison between calculated data with correlation and experimental data.

通过关联式的计算值和实验值之间的比较证明了所拟合的关联式精度较好。

The reaction of α-hydroxyketone with Michael acceptor nitroalkene.was studied. After many experiments, we then found that in the presence of Zn2 and cinchonine, the α-hydroxyketone could successfully react with nitroalkene. Under our optimized condition, we gained the 95% yield of product with the ratio of syn : anti of 3:1 and 72% ee value for syn-product.

有机碱作用下α－羟基酮对硝基烯烃的加成反应研究研究了α－羟基酮类化合物与Michael受体硝基烯烃类化合物的反应，通过分析和实验发现在Zn2和辛可宁的作用下α－羟基苯乙酮能够与硝基烯烃化合物顺利反应，在优化的条件下以95%产率和3：1的Dr主要得到顺式产物，其中顺式产物的ee值最高为72%。

The Colburn heat transfer factors Jh correlation could describe 96.6% of experimental data and the Colburn mass transfer factors Jm correlation could describe 81.4% of experimental data with an error of ±15%.

开发了反映空气侧传热特性的Colburn传热因子Jh和反映传质特性的Colburn传质因子Jm的关联式，所开发关联式在±15%误差范围内分别能涵盖96.6%和81.4%的实验数据，其平均误差分别为5.3%和8.5%。

The experiments indicate that the comminution by impact or/and static load usually produces FSD particulate systems.

实验表明，可破碎物料的冲击式和静压式粉碎过程一般产生FSD颗粒体系。

For gas flow past cylinder, the characters of flow field in different Mach number and Knudsen number condition were investigated, and especially for low Knudsen number cases, the results were compared with calculating results of Euler's equation. It showed that they are correspondent by comparing the characters of bow shock and wake. The convergence rates of different high resolution and implicit schemes were also investigated. The convergence behavior of the implicit WENO scheme developed in this paper is better than others. For gas flow past NACA 0012 airfoil, the calculating results were compared with results of experiment. It showed that the results of WENO scheme are of higher accuracy for the case with angle of attack.

在圆柱流场时，我们探讨不同马赫数且不同纽森数时的流场特性，并在低纽森数时，与那维尔-史托克方程式的计算结果比较，我们比较了弓形震波及尾流附近的特性，其结果是相当符合的，同时我们也比较不同高解析隐式算则的收敛历程，从收敛历程图可得到，本文发展出来的隐式WENO算则有较佳的收敛效果；在NACA 0012翼形的流场中，我们将与实验结果做比较，发现利用WENO算则计算的结果，对於具有攻角的流场，亦有相当高的准确度。

According to Lemaitre's damage evolution law and the assumption of this paper that the cyclic loading maximum tensile stress has the most contribution to the cyclic damage and assume that the stress is the maximum stress .The material parameters S which are expressed in exponential form and generalize the variation in the process of cyclic loading is exponential experience equation which provide the expectation of cyclic damage of 63Sn/37Pb material and lead it into the calculation of damaged incremental form and assume that damage keeps constant during the same cycle. The results match the experimental data. It proves that the Endochronic plasticity theorem adopt the calculation of damage environment.

根据Lemaitre损伤演化律及本文假设循环负载下拉应力在最大值附近对循环损伤的贡献最大，文中应力对各循环之损伤而言假设应力为最大拉应力，将材料参数S以指数型式表示，归纳出疲劳损伤在循环负载过程中的变化为指数型经验式，提供63Sn/37Pb材料在循环负载作用时损伤情况的预测，并引入含损伤增量式内涵时间之计算中，假设同一循环的损伤为定值，其计算结果与实验数据吻合，说明内涵时间塑性理论亦适用於损伤环境下的计算。

Firstly, a differential pressure air circuit system is employed and designed in this research.

设计了差压式气路测量系统，设计制造了实验用轴向式气动测头。

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。