查询词典 corrosion prevention

It is shown that the contact interaction enables bottom drillstring to whirl backward, and then an alternate bending stress with higher frequency is produced. So the drillstring fatigue failure could be accelerated. At the same time, a quite strong wallop force of high frequency is produced on the contacting point, and the contacting zone is next to the screw coupling of drill collars. It will easily result in the failure of screw couplings. The research results provide theoretical basis for the prevention of drillstring failure.

研究表明，下部钻柱与井壁的碰摩作用使下部钻柱反向涡动，产生高频的交变弯曲应力，会加速下部钻柱疲劳破坏；下部钻柱与井壁接触点处存在较大的高频冲击力，并且接触区域靠近钻铤螺纹联结处，更容易诱发螺纹联结处失效，该研究成果可为预防钻柱失效提供理论依据。

Department of Hanwang high school bears a tablet Wudu County Road, East River, Hanwang, dragon and phoenix,jie gan , mill dam, through prevention, outside Namibia, three rivers, the Jade Emperor, Guo River, such as 19 high school students the task of the township, junior radius of the services the Department of Hanwang, Longfeng two townships.

汉王中学高中部担负着武都县东路片、东江、汉王、龙凤、桔柑、磨坝、透防、外纳、三河、玉皇、郭河等19个乡镇的高中招生任务，初中部的服务半径为汉王、龙凤二乡镇。

The current craze in Japan has caused a rose moisturizing milk, its uniqueness is that the most precious rose 100% fine dew, collagen, France, rose essence it, all packed in this bottle, can rapidly moisture rough peeling skin, strengthen prevention chapped, skin like satin-smooth, fine, so that Rose loved every inch of skin moisturizing essence, while the release is difficult to resist the aphrodisiac rose fragrance, wearing a rose incense to sleep.

这款在日本造成抢购热潮的玫瑰保湿乳，其独特之处在於，将最珍贵的100%玫瑰精露、胶原蛋白、法国玫瑰精华，通通装在这瓶中，能迅速滋润粗糙脱皮的肌肤，加强预防乾裂，让肌肤有如丝缎般平滑、细致，让玫瑰保湿精华宠爱每一吋肌肤，同时释放令人难以抗拒的催情玫瑰香氛，穿著玫瑰香入睡。

Based on the geological and mining conditions and occurrence characteristics of loose aquifer of Xinglongzhuang Colliery,water bursting cause of 4303 full-mechanized caving mining face under loose aquifer was analyzed,the prevention measures of the 3rd aquifer and reasonable dimension of coal pillar for sand proof were discussed in this paper.

根据兴隆庄煤矿地质采矿条件，结合松散含水层赋存特征，分析了四采区4303综放工作面第四系松散含水层出水的原因，探讨了防治三含水的技术途径和留设防砂煤柱的合理尺寸。

Based on the geological and mining conditions and occurrence characteristics of loose aquifer of Xinglongzhuang Colliery,water bursting cause of 4303 full-mechanized caving mining face under loose aquifer was analyzed,the prevention measures of the 3rd aquifer and reasonable dimension of coal pillar for sand proof were discussed in this paper.

通过对梅河四井溃泥工作面覆岩破坏特征和顶板岩层状态的探测分析，结合离散元数值模拟手段，模拟了不同状态顶板条件下水平分层综放开采的顶底板位移场和破坏场，探索了溃泥、溃砂发生的成因和机理，丰富了水体下采煤的理论和技术体系。

Be able to change the negative sand prevention, block sand, as the positive control of desertification, sand; change "conquer the desert" and "wishful thinking" to "treat nature","best of both worlds," the people of the region become a major test of wisdom.

能不能变消极的防沙、堵沙，为积极的治沙、用沙；变&征服沙漠&的&一厢情愿&为&善待自然&的&两全其美&，成为对全区人民智慧的一大考验。

Company has always adhere to the 'responsibility for the development of national industry for the benefit of human health as a mission of' business purposes, promote prevention and control of cultural and homology 'health more than wealth' concept of health, with strength of enterprises, efforts to promote commercialization of scientific and technological achievements and industrialization, the successful launch of 'Pakistan salt crystal hyperthermia room, p

公司始终坚持&以发展民族产业为己任，以造福人类健康为使命&的企业宗旨，倡导防治同源文化和&健康高于财富&的健康理念，凭借企业的雄厚实力，全力促进科技成果商品化和产业化，成功推出&巴基斯坦盐晶热疗房，能量房，以色列盐疗屋&全力改善亚健康群，预防与治疗呼吸道疾病，糖尿病，高血压疾病，癌细胞为主

Makes use of gas sensor,it can measure strength of five kinds of gas which include O2、CO、CO2、H2S and CH4 at the same time, it have also alarm and display and print etc function,far-ranging applied in environment monitor, hygiene epidemic prevention, labor protection, combustible and explosive, safety to produce etc. it have certain applied value.

利用电化学传感器和红外气体传感器，可同时检测氧气、一氧化碳、二氧化碳、硫化氢、甲烷等5种气体在空气中的含量，并具有超限报警、显示、打印等功能，可广泛应用于环境监测、卫生防疫、劳动保护、易燃易爆和安全生产等领域，具有一定的应用价值。

Makes use of gas sensor,it can measure strength of five kinds of gas which include O2、CO、CO2、H2S and CH4 at the same time, it have also alarm and display and print etc function,far-ranging applied in environment monitor, hygiene epidemic prevention, labor protection, combustible and explosive, safety tointel 千兆网卡问题 produce etc.

利用电化学传感器和红外气体传感器，可同时检测氧气、一氧化碳、二氧化碳、硫化氢、甲烷等5种气体在空气中的含量，并具有超限报警、显示、打印等功能，可广泛应用于环境监测、卫生防疫、劳动保护、易燃易爆和安全生产等领域，具有一定的应用价值。

As the national legal supervision organs, Procuratorial Organs commitment of safeguarding the sacred duty of justice seriously research and accurate application of criminal policy, and in the discharge of duties in the procuratorial system for the improvement and innovation for the effective prevention of crime control, and efficient service to build a harmonious society is of major significance.

作为国家的法律监督机关，检察机关承担着维护司法公正的神圣职责，认真研究并准确适用宽严相济刑事政策，并在履行检察职责中进行制度的完善与创新，对于有效预防控制犯罪、高效服务和谐社会的构建具有十分重要的意义。

Those who loved reading were obliged to send for their books from England; the members of the junto had each a few

那些喜欢看书的人就得从英国购书，讲读俱乐部的的成员每人都有几本。

Three fourths of the earth's surface is covered with water.

地球表面的四分之三被水覆盖着。