According to the characters of debris flow and risk controlling condition in mountain towns, The concentric circle theory of geography is introduced in this paper, The concentric circle model for debris risk control in mountain towns is discussed and the effect of "concentric circle model" in hazard risk control is analyzed.

針對山區(qū)城鎮(zhèn)泥石流危害特征及風險控制現(xiàn)狀欧美系列一级二级在线观看，引入地理學中的同心圓理論欧美三级自拍视频，探討了山區(qū)城鎮(zhèn)泥石流風險控制的"同心圓模式"，分析了"同心圓模式"中各風險控制層對災害風險的控制機制及效應，提出城鎮(zhèn)泥石流風險控制應遵循多層防范国产丝袜熟女视频一区、逐級降低的思路一级毛片精品免费播放，研究可為山區(qū)城鎮(zhèn)的減災管理提供合理的參考。

Based on that the density distribution function of technical service life about existing structures obeys blocking tail distribution,a conditional reliability and a hazard rate function of existing structures are established in this paper.

依既有結(jié)構(gòu)的技術(shù)使用壽命密度函數(shù)服從截尾分布久久综合网天天桃花网，建立了既有結(jié)構(gòu)的條件可靠度和失效率函數(shù)丁香婷婷五月综合，從期望效益與其望經(jīng)濟風險的優(yōu)化分析著手，提出了一種既有結(jié)構(gòu)剩余技術(shù)壽命的預測方法欧美一级AAAAA特黄片免费看。

In this study, the convex set theory and convex models are applied in the treatment of uncertainty in the seismic hazard analysis and performance-based structural seismic evaluation and design, and an alternative approach is developed for analyzing the uncertainty in earthquake engineering.

本文運用凸集理論和凸集模型描述地震危險性分析和基于性能的抗震性能評估和抗震設計中相關(guān)因素的不確定性色色碰精品，發(fā)展地震工程中不確定性因素的新的處理方法。

Another possible hazard is an infection of the cornea developing after the procedure.

另一個術(shù)后的可能危害是影響角膜發(fā)育的感染日韩自拍中文在线视频观看。

Flight crews also face chronic exposure to cosmic radiation, which is a hazard for pregnant women as well.

飛行全體機員也面臨著長期暴露在外層空間幅射的危險欧美黄色视频第一次，這對孕婦也一樣是有害的。

Identification of these regulations or standards, the basis of major hazard risks are material and critical mass.

這些法規(guī)或標準中辨識重大危險源的依據(jù)都是物質(zhì)的危險性及臨界量黄网址免费。

Secondly, more focus is being placed on Hazard Analysis Critical Control Point and risk management.

其次日韩美乳精品无码福利视频，更多的重點是放在對危害分析與關(guān)鍵控制點和風險管理。

There is at pres t uncertainty regarding the hazard to health presented by crocidolite.

目前www.krttz.com，青石棉對健康的危害尚不清楚亚洲日本无吗在线视频。

It is reported that 70 percent of MPM has had a history of asbestos contact. There is a thin layer of crocidolite in the surface soil somewhere in Da Yao County of Yunnan province. Because the natives don"t know asbestos" hazard, clay containing asbestos was dug in order to make asbestos stoves, build roads, brush walls, combining the crusts destruction, much deforestation makes asbestos explosion .

云南省大姚縣某些地區(qū)地表中夾著薄薄的一層青石棉，由于當?shù)鼐用癫恢榔湮：片视频免费观看的网址，大量開挖含青石棉的粘土做石棉爐欧美日韩亚洲综合视频、鋪公路、刷墻等免费观看黄色国产一级视频，地表破壞无码专区免费大全在线观看，以及大量砍伐森林，造成水土流失又粗又硬又黄又长又爽的免费视频，石棉暴露成人免费网站，含棉巖自然風化，雨水沖刷成為天然污染源动漫专区第一页。

Probability density function, cumulative distribution function, survival function, hazard function, PP plot, and others.

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