查询词典 sand-blind

In recent years, some new water glass sand processes have been developed according to the rule of water glass theory. We have developed the coating transferring precision casting process to be used in mold making. A new reinforce 2000 multiplex denature water glass has been invented. The specific binding strength is improved 1～1. 5 times and the addition amount of new water glass can be reduced to 2. 8～3. 0% for CO〓 sand process.

近年来，在水玻璃砂基础理论的指导下，相继开发出了一系列新型水玻璃砂工艺，例如将涂层转移法精密铸造技术应用于模具的制造，开发了强力2000型多重变性水玻璃粘结剂等，使水玻璃的比粘结强度提高了1～1.5倍，CO〓硬化的水玻璃加入量降低到2.8～3.0％，在生产实践中得到了应用。

This paper studies the main geometrical parameter such as angle, height, width, stagger and the upper width in dentation and trapezoid flow path, firstly, uses the single-phase numerical simulation of the computational fluid dynamics technique to analyse the influence of different geometrical parameter on discharge coefficient and flow state exponent of drip emitter. Secondly, uses the two-phases numerical simulation of CFD (1% sand content ) to analyse the influence of the above mentioned geometrical parameter on the contribution regulation of sand and anti-clogging performance. Thirdly, uses the PIV （ particle Tracking Velocimetry ） technique which can see the small-scale flow path to observe and test the trajectories and velocities of solid particles in labyrinth flow path, and analyses the basic factors which can influence the movement characteristic of solid particles and the flow state in flow path.

本文以齿形流道、梯形流道为主要研究对象，以流道转角、流道高，流道宽、偏差量及梯形流道上底宽为主要结构参数，首先应用 CFD 单相流数值模拟技术对不同结构参数灌水器流道水力性能进行模拟，分析了不同结构参数对流态指数和流量系数的影响，其次，应用 CFD 两相流（含沙量为1%）数值模拟技术分析了结构参数对含沙量分布规律和抗堵塞性能的影响，然后，应用 PIV 可视化测试方法测试了固体颗粒在流道内运行轨迹及速度，分析了影响固体颗粒运动特性及流道内流体流态的基本因素，最后，对上述流道结构形式通过模具加工及滴灌带试制，进行了标准化测试（ GB/T 17187-1997 农业灌溉设备滴头技术规范和试验方法与 ISO 标准 ISO /TC23 /SC18 /WG5N4短周期堵塞测试程序），测试结果验证了 CFD 模拟结果，并提出了迷宫结构流道灌水器的抗堵塞设计方法。

The results show that:(1) No matter the fine aggregate using medium sand or fine sand, the strength of diabase concrete will be always a little higher than that of limestone concrete.

本文首先对地产的两种材料——辉绿岩和青砂进行调查评估，指出两种材料品质不良。

Distributary channel sand of river depositional system and delta front sand of delta depositional system in Pinghu and Huagang group are the primary reservoir.

平湖组和花港组的河流相和三角洲相的分流河道和三角洲前缘等砂体是主要的储集层段。

Shandong Qingzhou Hongda dredging machine factory in a professional sand mining machinery, river dredging the pond, Salt Lake mining, iron-Shatti from sales of production equipment manufacturers, adjacent to State Road 309 and Jiqinggaosu roads, transportation is very convenient, founded in 1997 , Over the years I plant to its own product quality and integrity of the business philosophy and friends from various circles of love and support, in Shandong Province became the sand mining machinery in the area of one of the more influential enterprises.

山东青州宏达挖沙机制造厂是专业的采沙机械、河道池塘清淤、盐湖开采、铁沙提取设备的生产销售厂家，毗邻309国道和济青高速公路，交通十分便利，始建于1997年，多年来我厂以自身的产品质量，诚信的经营理念以及各界朋友的厚爱与支持，成为了山东省境内采沙机械领域中较有影响的企业之一。

The results illustrate that the dustfall in Hotan is influenced by days and intensities of airborne dirt,raising sand and sand storm and has important effect on the soil.

通过野外调查、定位试验和室内分析，探索了新疆和田扬沙、沙尘暴、大风和浮尘产生的原因及发生规律与土壤降尘量的关系及其时空变化特点。

We turned left into the entranceway, which is nicely paved in sand colored flagstone and the discrete sign is simple bronze lettering on sand colored stone.

我们转向左边来到入口，入口用花色的砂岩铺设得很好，而且在花色砂岩上有间隔开的青铜印字。

The company uses the advanced output controllable technology, with the face milling material set the suitable miller, change the traditional surface contact into line contact, make the output granularity evener, high product, widely used in chemical industry, metallurgy, glassed industry, and the high rquirement of the evenness for milling after milling, sand making of building sand in recent years.

公司采用先进的可控进出料技术，结合实际的研磨物料应配用合适的研磨体，以传统的面接触改为线接触，使出料粒度更为均匀，产量更高，广泛使用于耐材、化工、冶金、玻璃等行业对磨后成品均匀度要求比较高的研磨作业，近年来还用于建筑用砂的制砂行业等。

2After the utilization of seasonal exclosure, the proportion of coarse sand (2.00～0.25 mm) dropped significantly, and the proportion of fine sand (0.25～0.05mm) and silt and clay (.05mm) increased significantly, soil bulk density and compaction dropped, soil porosity, nutrient and microbe quantity increased, soil microbial biomass and enzyme activity enhanced in the layer of 0～10cm and 10～20cm.

2放牧草地采用生长季围封恢复措施后，土壤0～10cm、10～20cm土层中粗沙(2.00～0.25 mm)含量显著降低，细沙(0.25～0.05mm)和粉粘粒(。05mm)含量显著增加，土壤容重和紧实度降低，土壤孔隙度、养分含量、微生物数量、微生物生物量碳、氮含量增加，土壤酶活性增强。

The product series of coated sand efficiently solved the problems: insufficiency of organic binder in high temperature, high expansivity of natural silica sand and much gas of coating of organic molecular in high temperature.

覆膜砂系列产品有效解决铸造材料有机粘结剂高温性能不足，天然硅砂热膨胀率高和有机高分子高温汽化发气量大的关键技术难题。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。