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The difference of soil nutrient between operation units can be learned from the maps, and the decision and operation for variable rate fertilization can be made according to the difference.

应用实践表明：建立的田间土壤养分信息库可以应用于精确农业变量施肥的决策和作业管理

Results Punctiform erosion, hemorrhage were observed by nake eyes in each groups. Epithelium cellular necrosis, defluxion, neutrophil being dominant in propria lamina and intact glandular were observed with microscopy. The erosion became severe with the successive stimulate of ethanol. There is no difference between distillate spirit and sodium chloride rats in Guth in 7th day, but Guth in distillate spirit rats was higher than that in sodium chloride rats in 30th day. PGE2, TGF-α contents in gastric mucosa of treated group increased significangly compared with control group. PGE2 showed no difference between each group in 7th and 30th day; TGF-α in gastric mucosa of distillate spirit and sodium chloride rats decreased after 1 month.

结果 茅台组、乙醇组、生理盐水组胃黏膜均肉眼可见程度不同的点状糜烂、出血；光镜下黏膜部分上皮坏死脱落，固有层以中性粒细胞为主炎性细胞浸润，腺体结构基本完整，病变随时间延长有所加重，Guth积分1周茅台组与生理盐水组差异无统计学意义，1月两者相比差异有统计学意义；茅台组、乙醇组胃黏膜组织内PGE2水平与生理盐水组相比明显增高，同时TGF-α表达增强；但PGE2水平各组间1周与1月相比差异无统计学意义；TGF-α表达强度在茅台组、生理盐水组1月后逐渐降低，差异有统计学意义。

The results showed that the inhibitory effects of chemical deicers on the germination of crop seeds were obvious increasing trends with the increase of their concentrations.There was a distinct difference to the same crop species for the different types of deicers,whereas there was a distinct difference to the same deicer for the different crop seeds.

结果表明：随着融雪剂处理浓度的增加，其对农作物种子发芽的抑制效应呈显著上升趋势，且不同融雪剂品种对同种农作物品种发芽的影响呈现较为明显的差异，不同农作物种子对同种融雪剂的反应差异也较大。

Result: when distilled water and purified water was used as diluting water, no obvious difference of bod5 was found between them, and both the results reached the standard （ below 0.2 mg/l）. deliquescent oxygen reduced with longer balance time and greater difference from standard occurred. before balancing,deliquescent oxygen was close to saturation. the results under 20 ℃ met the standard.

结果： 以蒸馏水和纯净水作为稀释水水源，其bod5都小于0.2 mg／l，均达到标准；平衡时间增长，当日溶解氧量趋于降低，与标准值的差值也逐渐增大，未经平衡的溶解氧量接近饱和；20 ℃时的测定结果达标。

The comparison of T score: The T score between male and female displayed that the vifrilismfeminization score in males was higher than in females （52.17±8.19, 37.44±8.69）. According to the age, the patients were divided into the 16- 25 old group and 26-35 old group. No significant difference was found in T score in male, but the feigned, partial and dementia praecox had significant difference in female （P〈 0.05）, and those at 16-25 years old had high scores.

分比较：男女T分之间比较显示男性的男性化-女性化分高于女性（52.17 8.19，37.44 8.69）：按不同年龄分为16-25岁及26-35岁两组，男性不同年龄组间T分无显著性差异，而女性不同年龄组间T分在装坏、偏执、精神分裂症量表分有差异（P〈0.05），以16-25岁的得分较高；按不同文化程度分为中学及大学两组，T分均无显著性差异。

In this article, with pointing out that the result of the current calculation model is deficient in the similarity, it has deduced the numerical regulation of the variation of the elements including q ,γ andτ in the steam-water distribution matrix equation when the terminal temperature difference exits in the heater via the power balance equation, and combining with the power equation and boiler absorbed heat equation, the precise calculation model for the impact of heater terminal temperature difference on heat economy of unit is then derived.

指出现有计算模型结果具有近似性的不足，本文通过加热器能量平衡方程推导出加热器有端差时汽水分布方程中q 、γ和τ元素数值的变化规律，然后结合功率方程和吸热量方程得到加热器端差对机组热经济性影响的精确计算模型。

Firstly, based on the wave equation, determining reasonably its initial boundary condition, the paper establishes a computer diagnostic model of oil pumping mechanical well, the damping factor in the model has been reasonably determined, the implicit difference solutionis conducted to the model by changing of step width expression difference solves, and the half analytical solution is explored to the model - fine integral method; and realizes the transformation from dot indicator diagram to indicator diagram of any section.

首先从抽油机井计算机诊断技术的理论基础入手，考虑多级抽油杆连续性，建立了粘滞阻尼波动方程，合理确定模型中的阻尼系数，采用无条件稳定的隐式差分法及半解析方法求解方程，获得抽油杆柱任意断面和抽油泵处的示功图。

In the second part, the paper analysis the connotation and features of difference teaching, addresses the need of difference teaching from society, education and the modern didactics, and explains the teaching process in general.

第二部分针对差异教学的内涵特点进行分析，从社会需要、教育需要、现代教学论三个方面论述了差异教学实施的必要性，阐述了差异教学实施的一般过程。

Differential equations and difference equations are powerful tools that describe the law of nature, but it is difficult to find their general solutions. Therefore , there has been an increasing interest in the study of the nature of solutions of differential equation and difference equation in theory.

微分方程及差分方程是用来描述自然现象变化规律的一种有力工具，由于寻求其通解十分困难，故从理论上探讨解的性态一直是近年来研究的热点问题。

Through the limit difference method,the partial differential equation of the semiconductor device is transformed into a difference equation,and the corresponding boundary condition is discretized with high accuracy.

采用有限差分法把器件工作的偏微分方程转化为差分方程，并将相应的边界条件转化为精度较高的离散化形式。

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％。