最大变化

Through the stress calculation of a 3d jacket platform in wave, the change of load combination acting on the braces of multiplanar joints was observed, the influence of different load combination on the maximum stress and the location of hot spot was revealed, and the error in stress estimation caused by regarding multiplanar joint as uniplanar joint was analyzed, which shows the necessity of stress analysis to multiplanar joints.

本文通过一座波浪中的三维导管架平台结构的接头应力分析，考察了接头的载荷组合形式随波浪的变化，揭示了不同的载荷组合形式对接头最大应力及其热点位置的影响，分析了将空间接头作为平面接头来估算最大应力时引起的误差，从而说明了进行空间接头应力分析的必要性。

In better management lawn community Geranium sibiricum, Potentilla anserine and Leymus secalinus are the dominant weeds all the time and Geranium sibiricum is the most dominant weed.The regular pattern of Shannon-Weinor index of turf weeds in three different management lawn communities is that in worse community maximum Shannon-Weinor index appears in spring and fall but in better community is in late-summer and primary-fall.

三种管理水平不同的草坪群落中杂草的多样性指数变化规律是，管理水平较差和一般的草坪群落中，杂草的香农-威纳指数的最大值出现在春季和秋末；管理水平较好的草坪群落中，杂草的香农-威纳指数的最大值出现在夏末秋初。

In this paper, the 3-D finite element relocating mesh method is used to calculate the temperature field and the thermal creep stress field of spillway dam and mid level outlet dam in certain roller compacted concrete gravity dam, sensitivity analysis have been down with different parameters, such as placing temperature, the location of cooling pipe, cooling temperature, time for water supply, ascended-layer of concrete, intermissive time and different placing time, and the commendatory construction scheme have been put forward in such analysis; according by the test result on the two scheme of concrete aggregate combination (basalt as coarse aggregate and limestone as fine aggregate, basalt as coarse aggregate and basalt as fine aggregate), simulation analysis on temperature field and thermal creep stress field of the commendatory construction scheme have been down, and analysis have also been down on temperature field and thermal stress field of the two different aggregate combination, the result indicates that the spillway dam and mid level outlet dam which adopted these two aggregate combination can both satisfy the require of design crack resistance in concrete, furthermore limestone as fine is better than basalt as fine aggregate; the effect of summer water storage and winter water storage on the temperature field and thermal stress field have been analyzed, comparing with winter water storage, in summer water storage scheme the maximum tensile stress at abnormal concrete in upstream fill is decreased by 0.1～0.3MPa and there are no evidence change of the maximum tensile stress at other parts, which indicate that summer water storage is avail for the crack resistance of upstream fill; according to the simulation calculating result and comparing temperature simulation calculating results and temperature controlling measures of some similarity projects both completed and construction, synthesis appraise have been carried to the design temperature controlling measures of dam, and the temperature controlling measures of this project have been brought forward, all these have great reference value on the design of temperature controlling measures and the optimization of the construction scheme.

本文采用三维有限元浮动网格法仿真计算程序，对某碾压混凝土重力坝的溢流坝段和中孔坝段分别进行了三维有限元温度场和温度徐变应力仿真计算分析，对浇筑温度、冷却水管的布置方式、冷却水温、通水时间、浇筑升程和间歇时间、不同开始浇筑日期等参数进行了敏感性分析，在此基础上提出了推荐的施工方案；根据两种骨料方案(玄武岩粗骨料+灰岩细骨料方案；玄武岩粗骨料+玄武岩细骨料方案)的混凝土性能试验研究成果，对推荐的施工方案进行了温度场和温度徐变应力仿真计算，并对比分析了两种不同骨料情况下的温度场和温度应力，结果表明溢流坝段及中孔坝段采用上述两种骨料均能满足混凝土的抗裂设计要求，且灰岩细骨料优于玄武岩细骨料；计算分析了夏季蓄水和冬季蓄水对坝体温度场和温度应力的影响，夏季蓄水方案与冬季蓄水方案相比，坝体上游变态混凝土区域最大拉应力小0.1～0.3MPa，其他部位最大拉应力无明显变化，夏季蓄水对坝体上游面混凝土的抗裂有利；根据仿真计算成果并通过比较国内一些已建和在建的类似工程的温度仿真计算成果及采取的温控措施，对大坝的设计温控措施进行了综合评价，并提出了该工程的温控措施，对温控设计和优化施工方案具有重要参考价值。

The solar water heater is a kind of domestic instruments, which is influenced greatly by the change of intensity of the solar radialization. A bottleneck problem during its development is how to make full use of the solar and save electrical energy farthest.

太阳能热水器是受太阳能辐射变化影响尤为显著的一种家电产品，其发展过程中的一个瓶颈问题就是如何最大程度的利用太阳能和最大程度的节省电能。

In addition to compare the heart rate and blood pressure at rest and during exercise,we compared the maximal heart rate obtained from the exercise and the age-predicted maximal and submaximal heart rate.Result:Heart rate and systolic blood pressure increased significantly during the exercise.

参照心电运动试验的有关标准决定终止时间并对结果进行评定，比较运动前后心率、血压的变化，并将运动中的最大心率与年龄预计最大心率、年龄预计亚极量心率做一比较。

The analysis shows that, the maximum stress change appears in the heat affected zone of the flange's center and it has main influence on surface crack of flange plate and the maximum stress is less than the allowable stress 235 MPa of the material, which is in the reliable range.

分析结果表明，最大的应力变化出现在法兰盖板中心的热影响区，对盖板表面裂纹有主要的影响，最大应力小于材料的许用应力235 MPa。

Atdifferent point before and after Subcutaneous administration of the trugs, theparameters of HR, LV-PSP, LV-DP±dp/dt~max、(the maximum ofshortening velocity of myocardium under unloading ) and RPP were recorded.

观测经皮下给药前后不同时刻的心率和左室收缩压峰值、左室发展压、左室压力随时间变化的最大速率、零负荷时心肌最大收缩速率、心率与左室发展压乘积等。

The results show that,in the natural conditions,the intensity of sap flow of Populus populars was 0.088 L·cm -2 ·d -1 .The velocity of sap flow at different depths below the cambium showed the same temporal changes of Populus populars .

结果表明，在正常生长状态下，小美旱杨树干单位面积液流通量为 0 。0 88L·cm- 2· d- 1；形成层以下不同深度的树液流速具有相同的日变化趋势，在中午前后各深度流速值均达到最大，各深度流速差值亦达到最大。

In the middle of these Cogitations, Apprehensions and Reflections, it came into my Thought one Day, that all this might be a meer Chimera of my own; and that this Foot might be the Print of my own Foot, when I came on Shore from my Boat: This chear'd me up a little too, and I began to perswade my self it was all a Delusion; that it was nothing else but my own Foot, and why might not I come that way from the Boat, as well as I was going that way to the Boat; again, I consider'd also that I could by no Means tell for certain where I had trod, and where I had not; and that if at last this was only the Print of my own Foot, I had play'd the Part of those Fools, who strive to make stories of Spectres, and Apparitions; and then are frighted at them more than any body.

天命难测，使人生显得多么光怪陆离，变化无穷啊！在不同的环境下，人的感情又怎样变幻无常啊！我们今天所爱的，往往是我们明天所恨的；我们今天所追求的，往往是我们明天所逃避的；我们今天所希翼的，往往是我们明天所害怕的，甚至会吓得胆战心惊。现在，我自己就是一个生动的例子。以前，我觉得，我最大的痛苦是被人类社会所抛弃，孤身一人，被汪洋大海所包围，与人世隔绝，被贬黜而过着寂寞的生活。仿佛上天认定我不足与人类为伍，不足与其他人交往似的。我当时觉得，假如我能见到一个人，对我来说不亚于死而复生，那将是上帝所能赐给我的最大的幸福，这种幸福仅次于上帝饶恕我在人间所犯的罪孽，让我登上天堂。而现在呢，只要疑心可能会看到人，我就会不寒而栗；只要见到人影，看到人在岛上留下的脚印无声无息地躺在那里，我就恨不得地上有个洞让我钻下去。

Of the three tropical precipitation clouds in winter in Hainan the water vapor content is the highest in cumulonimbus and varies most greatly during precipitation, the second highest in cumulus congestus and the lowest in stratocumulus opacus.

在海南岛冬季三类热带降水云中，积雨云水汽含量最大，降水期间变化幅度也最大，浓积云次之，最低是蔽光层积云。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。