查询词典 connection conservation

The double ends of central tube is penetrated into pipe union nut and seal ring in turn, and the central tube is penetrated into ladder-shaped public connection, push the seal ring and chuck ring of double end into the ladder-shaped public connection separately, the thrash pipe union nut is heave, is credible tight connection.

将中心管两端依次穿入由壬螺母、密封圈，并将中心管穿入梯形公接头内，分别将两端的密封圈，压环推入梯形公接头内，锤击由壬螺母凸起，即可靠密封连接。

The hot air furnace is a kind of energy conservation type furnace, composed of burner, furnace chamber, mixing room, hot air outlet and outside jacket, the diluted air in the jacket has two functions, firstly, having insulation purpose: the air belongs to inert gas, it has good insulation function for furnace body, can reach to purpose to cool/protect inside lining and reduce its thickness of furnace chamber; secondly, having preheating function: the gas in the jacket is contacted with hige temperature furnace wall, and enters the mixing room after heat absorption, then to teach the purpose of preheating and energy conservation.

热风炉由燃烧器、炉膛、混合室、热风出口和外夹套构成，是一种节能型炉型，夹套中的稀释空气有两种作用，其一，保温作用：空气属惰性气体类，对炉体有良好的保温作用，达到冷却保护和减薄炉膛内衬的目的；其二，预热作用：气体在夹套中与高温炉壁相接触，吸热后进入混合室，达到了预热节能的目的。

Olyacrylamide, as an ameliorant of soil structure, is the ameliorant of soil in the aspect of water conservation, fertilizer conservation and yield increase, with a new product named PAM made in French as a material, we adopt simulating and field experiments, using Yang ling soil, to study the effect of PAM on soil structure and fertilizer eluviations systematically.

AM(聚丙烯酰胺，Polyacrylamide，简称PAM)作为土壤结构稳定剂，具有改土、保水、保肥、增产等效应。

Week 5 Angular momentum of particle and conservation law of angular momentum, angular momentum of rigid body, theorem of angular momentum, conservation law of angular momentum.

第5周 质点的角动量和角动量守恒定律，刚体的角动量、角动量定理、角动量守恒定律。

To use respectively that rigid body plane differential equations of motion, theorem of angular momentum, conservation law of mechanical energy , and the law of conservation of energy.

分别采用刚体平面运动微分方程、动量矩定理、机械能守恒定律以及能量法，对拟定的半圆柱体微振问题进行分析求解，并作以比较，明确了从不同角度入手分析解决微振动问题所需基础知识和基本理论以及相对难易程

Its subject coverage:General publications and general techniques ,Silviculture ,Forest mensuration and management ,Physical environment ,Fire ,Plant biology ,Genetics and breeding. Variation. Evolution,Mycology and Pathology ,Insects and other invertebrates ,Range,Game and wildlife,Protection forests. Watershed/catchment management. Soil conservation ,Other land use. Nature conservation. Arboriculture ,Dendrochronology and dendroclimatology .

期刊的主题范围为：普通出版物和技术，造林法，森林测定法和管理，自然环境，火灾，植物生物学，遗传学和培植，变异和进化，真菌学和病理学，昆虫和其他无脊椎动物，范围，竞赛和野生生物，林业保护，分水岭和集水岭管理，水土保持，其他的土地使用和自然保护。

The museum is also becoming a centre of art conservation and restoration, with stone and metal conservation laboratories producing work to contemporary international standards.

柬埔寨国家博物馆也正在成为柬埔寨艺术收藏和修复的中心，其金石研究中心的研究水平已具备国际标准。

Kendall Bioresearch Services For professional research and advice on all aspects of Entomology in Agriculture, Horticulture, Agroforestry and Wildlife Conservation. This web site provides a guide to the classification and identification of insects and other arthropods, offers advice on pest control, crop protection, habitat management for insect conservation, experimental design and field sampling methods.

Kendall生物研究服务中心致力于农业、园艺、农林学和野生保护的昆虫学的专业研究、该网站为昆虫和其他节肢动物的确认和分类提供了一个向导，并且在害虫控制、作物保护、为昆虫保护的生境管理、实验设计和野外采样方法等方面给出了忠告。

Soil and water conservation protective cultivation is an advanced cultivation technology that avoid cultivation or few cultivation on farmland and with stubble cover.Protective cultivation technology is an integration technology that use stubble cover,no-tillage cultivation,deep-plough with machine,and weeding with chemistry.Adopting soil and water conservation protective cultivation can reduce the loss of soil and water in northeast blackland area and improve the soil anti-erodibility.

中文摘要：水土保持保护性耕作是对农田实行免耕少耕，并用农作物秸秆残茬覆盖地表的一项先进耕作技术，保护性耕作技术是由秸秆覆盖、免耕播种、机械深松和化学除草等核心技术组成的一项集成技术，采用水土保持保护性耕作措施可以有效减少东北黑土区的水土流失，提高黑土区土壤抗蚀性。

Furthermore, due to the historical site and its architecture is fresh and active subject in the city, an innovation and development is crucial as well. In this study, four consistent concepts to approach valuable suggestions for the conservation and development of certain historical site and its architecture will be discussed based on conservation and proper renewal, which are the boun...

本文以建立系统科学的历史风貌街区和建筑的保护更新机制为基点，从保护与更新的界定、保护性开发机制的系统性、管理体系的规范性和保护机制的持续性等四个方面，对天津的历史风貌街区和建筑的保护性开发提出建议，以期使宝贵的历史建筑文化资源在得到有效保护的同时进行科学合理的开发利用，并在实施城市的和谐和可持续发展战略中发挥重要的作用。

Cable dampener cannot be rolled up but must be hung over the cable.

缆帆不能被卷起，必须保证处于展开状态

"This skylark is a present from my master," he says.

"这只云雀是我主人献上的礼物。"他说。