The optimum sand burial depth for the development of the population characteristics was higher under strong than under weak sand burial. 强沙埋条件的种群各性状发育最适沙埋深度均大于弱沙埋条件下;
They are so thick that you cannot see the sun, and the wind is sometimes strong enough to move sand dunes. 沙尘暴能见度经常很低以至于看不见太阳,风有时得能移动沙丘。
Effect of Nitrogen Application on Nitrogen Assimilation in Strong Gluten Wheat Cultivated on Sand Beach Soil of Huanghe River 氮肥运筹对黄河沙滩地优质麦氮素同化的影响
A strong hard building material composed of sand and gravel and cement and water. 用沙子、沙砾、水泥和水制成的高强度建筑材料。
Strong adaptability, which can not only apply to waterglass sand, but also resin sand technique. 适应性强,既适用于水玻璃砂,也适用于树脂砂工艺。
Studies on Different Row Spacing and Seed Rates of Oat in Horqin Sandy Land Effect of Nitrogen Application on Nitrogen Assimilation in Strong Gluten Wheat Cultivated on Sand Beach Soil of Huanghe River 科尔沁沙地休眠燕麦行距和播量效应研究氮肥运筹对黄河沙滩地优质麦氮素同化的影响
Spring in Beijing is short and mild, but with strong winds that can blow gusts of sand and dirt. A light sweater and jacket would suffice. 北京的春季短且多风沙,温度适中并不冷,穿一件薄毛衣和一条绒裤即可。
Due to its shallow intaking basin, and its location in strong descending area, 80% sand which entered into river mouth will fill in land and coastal area, then present Huanghe river delta is formed. 由于黄河的受水盆地浅,区域上又位于构造强烈沉降区,进入河口地区的泥沙约有80%淤积在陆上及滨海地区,逐步形成了现代的黄河三角洲。
An experience of combining a large water-pumping well with a sealing curtain technique was adopted for dewatering in the excavation of foundation trench, under the special conditions of full water supply and strong permeable sand layers. 本文专述在水补给充分,又有强渗透性砂层的特殊条件下,采取大口井抽水与帷幕止水相结合的基坑开挖降水的体会。
Strong and fluent activity of wind and sand is the key factor for plant species to settle in sandy-land. a.强烈的风沙活动是流动沙地植物定居的限制因子。
Experimental plantation of casuarina equisetifolia was set up by deep-planting strong stocks method on shifting sand which was unsuitable for planting at the west coast of Changjiang County, Hainan Province. 在海南省昌江县西海岸存在诸多不利于植树造林因素的流动沙地上,海南省林科所科技攻关人员采取了木麻黄大苗深栽的营林技术造林效果明显。
The East China Sea ( ECS) shelf is characterized by gentle topography, large amount of sediment supply, high settling rate and strong dynamic field, and the tidal sand ridges are well developed and distributed on the ECS shelf. 东海陆架以宽平的地形、充分的陆源沉积物供应、快速沉降和强动力场为特征,中外陆架发育大规模潮流沙脊地貌。
At the river embankment of Guangji in Anqing, the upper layer at the foundation part of embankment sections is weak pervious overburden and the strong pervious sand bed is in lower layers and they are typically double layer structure foundation. 安庆广济江堤部分堤段堤基上层是弱透水覆盖层,下层是强透水砂层,为典型的双层结构地基。
For the treatment of this ground, following steps are taken: strong ramming to reinforce the fill, digging sand ditches to lower the ground water level, dredging drainage pipeline to cut off the recharge source of underground water etc. 该地基处理采用强夯加固填土、挖砂石盲沟降低地下水位、疏通排污管道,切断地下水补给来源等方案。
Other advantages of it are good rheological property, strong fracture making ability and sand carrying capacity, and little damage to formation, etc. 该压裂液配制简单,不需要杀菌剂和破胶剂,具有流变性能好、造缝与携砂能力强、对地层伤害小、使用方便等优点。
The correlation regression showed that they had notable linear correlation relationship between the sand-wind Weather indexes ( strong wind days per year, the elevating sand days and the dust storm days) and protection forest indexes ( protection forest area, protection forest volume). 回归分析表明,风沙天气指标(年均大风日数、扬沙日数和沙尘暴日数)与防护林指标(防护林面积、防护林林木蓄积量)存在着显著的线性关系。
At the same time strong ability of field surface's offering sand is the material base of formation of sandstorm. 沙尘暴的发生根本上受东亚冬季风的强度控制;吉林西部地区很强的地表供沙能力是沙尘暴形成的物质基础。
At the strong base, the surface of sand would been dissolved partly, and form a double salt with alkali in binder after hardening. 在强碱性粘结剂的作用下,砂粒表面会部分溶解,溶解部分固化后与粘结剂中的碱一起形成复盐;
Application of Strong Force Sand Belt Grinding in Machining of Connecting Rod 强力砂带磨削在连杆加工中的应用
The results showed that the model had high reliability for the situation forecast and adjust of circulation, and the capabilities to forecast the start-stop time and intensity of cold air affecting, the strong sand dust, the period of and area of precipitation, etc. 结果表明,该产品对环流形势预报和调整可信度高,并且对冷空气发生的起止时间、强度及其相应的强沙尘、降水时段和降水的落区都具有较强的预报能力。
Sandstorm occurring in north Shaanxi was not only influenced by strong wind, thermal instability and sand source, but also by the drought degree of previous period, an important factor to sandstorm occurring. 研究发现:陕北沙尘暴的产生不仅受强风、大气的不稳定和沙源三大因子支配,前期的干旱程度也是产生沙尘暴的一个重要因子。
It was verified through the strong tamping test that for the medium fine sand layers, the physical mechanical properties were improved, and the capacity of vibration proof and liquefaction resistance was enhanced. 经强夯试验证实,中细砂层的各项物理力学性质指标得到改善,提高了抗震动液化的能力。
In Meizhou Bay, the strong tidal stream transports its mud and sand from open sea, but is restricted to a certain extent, making the terrigenous clasts of the bay the main source of sediment. 湄州湾强劲的潮流导致外海泥沙输入,但受一定程度的限制,海湾周围的陆源碎屑成为沉积物质的主要来源。
The poor natural condition such as durative drought, strong wind and rich sand sources and sparse vegetation, and irrational use of water, land and plant resources are major causes for leading to sand storm in Hexi Region. 恶劣的自然条件,如持续干旱、大风天气、丰富的沙源、植被稀疏、滥用水、土地以及植物资源等,导致了河西绿州区沙尘暴的频频发生。
The problem of strong moisture absorbability is the common problem of sodium silicate sand. It is also the most difficult problem of practical application sodium silicate sand hardened by microwave heating. 强吸湿性问题是水玻璃砂型的普遍性问题,也是微波硬化水玻璃砂工艺实际应用的关键性难题。
Wind turbine blades work outdoors, so it need a higher request in the something of sustain Strong wind load, sand erosion, ultraviolet radiation, atmospheric oxidation and corrosion, acid corrosion, material costs. 风电叶片露天工作,在承受强风载荷、砂粒冲刷、紫外线照射、大气氧化与腐蚀、酸盐腐蚀、材料成本等方面有较高的要求。
WSN do not need the support of fixed networks, it has the fast and strong invulnerability ability feature sand has very broad application prospects. WSN不需要固定的网络支持,具有快速展开、抗毁性强等特点,具有十分广阔的应用前景。
In the conditions of strong hydrodynamic force caused by typhoon, Sand wave and Sand ridge area seabed bottom shape will have the large changes. 在台风等引起的强水动力条件下,沙波沙脊区的海底底形将会发生较大的变化。
In the strong hydrodynamic, sand bodies developed area, production capacity is relatively high, conversely, weak capacity. 2. 在水动力强、砂体较发育的区域,产能相对较高;反之,产能较弱。