The research shows that gas concentration shows generally an increasing tendency along the working face airflow direction, from 0.095% to 0.18%, under the effect of gas drainage points, up-and-down changing locally; gas distribution in a transect of working face is unequal, under the effect of gas emission, ventilation and drainage, the gas concentration near coal wall is larger than that near goaf, which is a concave function distribution within a distance of 1876.5 m from the inlet of working face, after greater than 76.5m, which is a decreasing distribution from coal wall to goaf.

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And the keytechniques are in the following:(1) The algorithm and program of intensified node arrangement near crack tip andalong crack line (2) The shape function calculation of point near crack based on visibility criteria (3) The contour integral method for calculation of stress intensify factor K_ⅠK_Ⅱ(4) The rock slope appraisal method using circular method, polygonal method orgraph theory method depending on the slope joints combination

程序?qū)崿F(xiàn)的關(guān)鍵技術(shù)和算法如下：(1)沿裂隙結(jié)點(diǎn)布置及裂尖結(jié)點(diǎn)加密的算法及程序(2)采用可視準(zhǔn)則的形函數(shù)算計(jì)算程序(3)圍線積分計(jì)算復(fù)合型裂紋裂尖強(qiáng)度因子K_Ⅰ、K_Ⅱ的算法及程序(4)圓弧搜索法www.色棋棋.com、折線搜索法和無(wú)網(wǎng)格—圖論搜索法的算法及程序

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On mountainous sites, grade Ⅰ or Ⅱ stands including land below the crown of the secondary broadleaf forest and the Chinese-fir plantation or east-facing, shady dry land could be considered for the plantation. The transmittance of crown in the areas should be 55%~60%. One-year-old high quality seedlings above 25 cm tall and 0.25 cm in diameter near the ground-level should be used. For high-yield, field cultivation, shading facility should be considered and seedlings of taller than 15 cm and greater than 0.15 cm in diameter near the ground should be applied. The appropriate density and sunlight transmittance ought to be 30 cm×30 cm and 50%, respectively.

結(jié)果表明，利用山地種植XXXX欧美熟妇HD，選擇透光率為55%~60%的Ⅰ美女被啪到高潮喷奶水的网站、Ⅱ類(lèi)立地的殘次闊葉林和杉木林冠下，或地形隱蔽2019手机视频中文字幕在线观看、東向的山垅旱地999在线观看视频大全，選用苗高25 cm以上、地徑0.25 cm以上的1年生優(yōu)質(zhì)苗木造林美女黄片子；利用農(nóng)田進(jìn)行庇蔭設(shè)施高產(chǎn)栽培有码无码日韩精品视频，應(yīng)選用苗高在15 cm以上、地徑0.15 cm以上規(guī)格的苗木栽植国产一级在线和观看，適宜栽植密度為30 cm×30 cm一级黄片一级A片一级片，遮陽(yáng)透光率在50%左右。

Researchers have discovered a potential new species of comb, or ctenophore, jellyfish near the Ryukyu Trench near Japan.

在日本附近的琉球海溝狂操老女人逼黄色一级视频，研究者們發(fā)現(xiàn)了櫛水母的一個(gè)可能新種久久久国产一级黄色电影。

He stressed no destructive earthquake near Beijing is likely to occur in the near future.

他強(qiáng)調(diào)极品孕妇无码视频在线第一页，沒(méi)有破壞性地震附近的北京有可能出現(xiàn)在不久的將來(lái)。

Results revealed that the large side insulation of the stator bar in slot is available for ultrasonic pulse-echo testing; Coupling transducer on the surface of a practical stator bar could minimize the influence on the measurements of velocity, contributing no destructivity of the ultrasonic testing for stator insulation; The simultaneity of same velocity and higher attenuation can be used to detect insulation delamination from conductors; Compared with the wide sides of the bars in slot, the short sides of the bars near the exit from slot and the end bars had a same velocity and a higher attenuation; The velocity might be exactly measured on the shot sides of the bars near the exit from slot and the end bars, while the attenuation might not, which were examined though filed tests; V min decreased greatly and V av decreased slightly with the service time of the bars.

在實(shí)驗(yàn)室對(duì)線棒多種結(jié)構(gòu)處的主絕緣和不同運(yùn)行年數(shù)(未老化黄色网站入口在线看、16中文视频在线你懂的、18 和23年)線棒的主絕緣進(jìn)行了低頻超聲反射法檢測(cè)試驗(yàn)，并進(jìn)行了現(xiàn)場(chǎng)試驗(yàn)高清無碼視頻免費在線觀看黃色，發(fā)現(xiàn)(參見(jiàn) Hao et al久久精品超碰， IEEE DEI， to be published)一级黄色片区，槽部線棒的寬面絕緣不受換位絕緣的影響欧美国产综合，比窄面絕緣更適合超聲測(cè)量；線棒表面平滑的半導(dǎo)體層減小了耦合劑對(duì)超聲測(cè)量的影響国产一区二区欧美日韩在线观看，實(shí)現(xiàn)了無(wú)損性国产日韩欧美在线电影院日本黄色网站；波速不變而聲衰減減小可以檢測(cè)線棒出現(xiàn)絕緣與導(dǎo)體脫殼缺陷；出槽口和端部線棒的窄面絕緣與槽部線棒的寬面絕緣相比中日韩一级AAAAAAAAA，聲衰減大而波速一致欧美瑟瑟网站；現(xiàn)場(chǎng)試驗(yàn)驗(yàn)證了波速不受絕緣結(jié)構(gòu)和現(xiàn)場(chǎng)測(cè)試條件的影響，而聲衰減受以上因素影響很大(參見(jiàn) Hao et aljapan黄片在线看，中國(guó)電機(jī)工程學(xué)報(bào)， Vol.23 No.4)中国一级黄片在线； V min 隨運(yùn)行年數(shù)明顯減小免费视频精品， V av 隨運(yùn)行年數(shù)慢慢越小。

Then base on theweak interference of cable displacement and near influence of hanger tension theories, deducing thesimplified computation method in construction stage. Accouding to the result from optimization, contractwith the result that from using the finite element sofeware ANSYS, we consider the geometric nonlinearand so on. Through the example proving, deduce the simplified optimization method which iseffectiveness, and disproof the weak interference of cable displacement and near influence of hangertension theories is illogicality.

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This paper discusses the basic properties, ideals and quotients of the near ring s which meet distributive law, and some important theovems of ring theories were extended into near ring s.

本文研究了滿足分配律的擬環(huán)的基本性質(zhì)、理想和商另类欧美97性XXXXX，并把環(huán)論中的一些重要定理推廣到擬環(huán)中去bbixxcon。