分析试验

Using the fatigue equation, the fatigue performance of porous concrete and common semi-rigid base materials and cement concrete are compared, the fatigue stress coefficient which is used in the load stress calculation for porous concrete as undersurface of cement concrete pavement and the tensile strength structure coefficient which is used in the flexural stress check for porous concrete as base of asphalt pavement are obtained.

进行室内小梁弯拉疲劳试验，对疲劳试验数据进行分析，得出多孔混凝土不同失效概率下两种形式的双对数疲劳方程，利用疲劳方程，将其疲劳性能与常用半刚性基层材料和水泥混凝土进行比较，还得出了多孔混凝土作为水泥混凝土路面下面层荷载应力计算的疲劳应力系数，和作为沥青路面基层层底弯拉应力验算的抗拉强度结构系数。

The citric acid-producing strain Aspergillus niger 2363-2, was isolated and used in our research. The fermentation conditions were optimized as follows: sucrose as carbon source 8. 0-14. 0%, ammonium chloride as nitrogen source 3. 0-4. 0g/l, initial pH 2. 0, and cultural temperature 30℃. The influential factors of formation of spores were also studied, and a series of measures were taken to restrain the spore formation on the basis of our experimental results. With the consideration of the cultural environment and microbial cell itself, the factors affecting the duration of citric acid-producing activity of microbial cells were examined, and it is found that undissociated citric acid and the ageing of microbial cells are the main factors. The experimental results also show that partial replacement of fermentation broth can lengthen the duration of citric acid -producing acitivity of microbial cells.

筛选出了用于试验研究的柠檬酸发酵用菌Aspergillus niger 2363-2，确定了其最适发酵条件—碳源选用蔗糖，浓度8.0~14.0%，氮源为NH〓Cl，浓度3.0~4.0g/l，发酵初始pH值为2.0，培养温度30℃；讨论了分生孢子产生的影响因素，并通过试验提出了抑制分生孢子产生的措施；从分析微生物所处的环境和微生物本身两个方面出发，探讨了影响微生物菌体产酸活性持久性的因素，认为分子态柠檬酸和菌体本身的老化是影响微生物产酸活性持久性的两个主要因素，并提出采用部分置换发酵液发酵能延长微生物菌体的产酸活性。

The article discusses the law of ground temperature returning to freeze and the variation instance of upper bound on the basis of the cast-in-place pile s data which tested in place in permafrost regions.

结合对冻土区钻孔扩底桩的现场试验数据，论述了灌注桩地温的回冻规律及上限变化情况，通过现场静载试验，比较了扩底桩与直孔桩的抗拔能力，分析了桩周土体冻结强度、地面变化的基本状态。

40 patients presenting gastric symptoms underwent gastric mucosa biopsy while doing gastroscopy. All samples were analyzed by Wartin-Stany dying, rapid urase test, and 13C-urea breath test respectively as well as by histological examination. The patients with the same results by WS and RUT were regarded as chronic gastritis. In this patient, we analyzed the specificity, sensitivity and accuracy of 13CUBT.

取40例因上腹部症状而行胃镜检查的患者胃窦粘膜活检，分别行Wartin-Stany银染色、快速尿素酶实验、13C尿素呼气试验（13CUBT），并同时行病理组织学诊断；将WS和RUT结果相一致且病理结果为慢性胃炎的病例入选，分析13C尿素呼气试验（13CUBT）诊断慢性胃炎幽门螺杆菌感染的特异性、敏感性、准确性。

40 patients presenting gastric symptoms underwent gastric mucosa biopsy while doing gastroscopy. All samples were analyzed by Wartin-Stany dying, rapid urase test, and 13C-urea breath test respectively as well as by histological examination. The patients with the same results by WS and RUT were regarded as chronic gastritis.

取40例因上腹部症状而行胃镜检查的患者胃窦粘膜活检，分别行Wartin-Stany银染色、快速尿素酶实验、13C尿素呼气试验（13CUBT），并同时行病理组织学诊断；将WS和RUT结果相一致且病理结果为慢性胃炎的病例入选，分析 13C尿素呼气试验（13CUBT）诊断慢性胃炎幽门螺杆菌感染的特异性、敏感性、准确性。

All samples were analyzed by Wartin-Stany dying, rapid urase test, and 13C-urea breath test respectively as well as by histological examination. The patients with the same results by WS and RUT were regarded as chronic gastritis. In this patient, we analyzed the specificity, sensitivity and accuracy of 13CUBT.

取40例因上腹部症状而行胃镜检查的患者胃窦粘膜活检，分别行Wartin-Stany银染色、快速尿素酶实验、13C尿素呼气试验（13CUBT），并同时行病理组织学诊断；将WS和RUT结果相一致且病理结果为慢性胃炎的病例入选，分析13C尿素呼气试验（13CUBT）诊断慢性胃炎幽门螺杆菌感染的特异性、敏感性、准确性。

In order to improve accuracy and intelligibility of error prediction for one novel target system based on six-intersected-screen, which was used to measure bullet flight vector, a method based on Taguchi and Monte Carlo simulation approach other than traditional differential approach was introduced.

为了解决多光幕交汇立靶测量精度分析过程中运用传统微分误差分析法所得结果偏大，且直观性差的问题，介绍了一种采用数值分析和田口试验方法相结合的改进方案。

In this paper, based on the experimental studies, the effects of the ARC-3 glass fiber for the improvement of the flexural tensile and the unconfined compressive of the concrete are analysed. Further statistical relations between flexural tensile strength, volume ratio of fiber and curing time, and a mathmatical model of the flexural tensile is presented. Finally, the optimum fiber volume ratio in the concrete is presented. In this paper, a mathematical model of the volation between the flexural ten...

本文通过大量试验研究，分析了ARC-3型高耐碱玻璃纤维对水混混凝土抗折强度及抗压强度的增强效果；提出了抗折强度与纤维掺量和龄期的统计关系，以及抗折强度的数学模型；提出了最佳纤维掺量；从玻璃纤维增强混凝土的应力-应变关系分析了其塑性性质和抗裂性能，对其抗压模量和抗弯模量的测试分析，提出工程设计时可忽略模量的变化；本文给出的抗折强度与抗压强度关系的数学模型，可直接供生产单位使用。

Lastly, to test the efficacy of shim plate in the single hole plate and research the fatigue life of single hole plate by means of changing the thickness and size of shim plate and the various torque, and then to test the shim plate efficacy at the abutting joint part for studying the fatigue life of the screw connecting component and rivet connecting component of typical wainscot of X air plane.

最后，首先在单孔板上试验垫片的功效，通过改变垫片的尺寸厚度、垫片面积及垫片在承受不同大小力矩下，分析研究单孔板的疲劳寿命，确定垫片尺寸厚度、面积和力矩对单孔板寿命的影响。其次在对接件上试验垫片的功效，研究运X飞机典型壁板螺接结构件和铆接结构件的疲劳寿命。

In order to study the migration and removal characteristics of fluorine and chlorine in Guizhou Shuicheng coal,regressive release flotation and float-sink tests were carried out,during which the fluorine and chlorine content in the washed coal products analyzed,while the washability of original coal samples assessed.

通过分步释放试验和浮沉试验对贵州水城煤样进行洗选，得到不同的洗选产品，并进行了可选性评定。对不同产品中氟和氯的含量进行分析，研究了洗选过程中氟和氯的迁移和脱除特性。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。