查询词典 sand dune

The lift-off angle of saltating sand grain follows LogNorm4 function distribution; lift-off horizontal velocity, vertical velocity and resultant velocity of saltating sand grain and falling angle and vertical velocity of saltating sand grain follow Gamma function distribution; falling horizontal velocity and resultant velocity of saltating sand grain follow Pearson IV function distribution.

跃移沙粒起跳、降落速度分布函数利用风洞实验获得的沙粒跃移运动的片断轨迹，反推出沙粒起跳角度服从LogNorm4函数分布，跃移沙粒起跳水平、垂直及合成速度均服从Gamma函数分布。

The results show that, during the period of collision between the sand grain and the sand bed, the lost kinetic energy is more than half of the total energy. Moreover, because the percentage of collision angles with more than 0° is up to 70％, the vertical speed of sand increases even if the kinetic energy decreases, which ensures that the sand particles can receive more energy from the air to keep on the saltation movement.

实验结果表明，沙粒与沙床碰撞过程中损失的动能超过总能量的一半，且由于碰撞平面角大于0°的比例达到70％，即使沙粒在碰撞过程中能量有所损失，沙粒与沙床碰撞后垂直分速度增加的现象仍比较普遍，使得沙粒在与气流相互作用的过程中获取更多的能量，从而为沙粒的持续跃移提供了保证。

Effects of dry temperature and dry time on properties of heat cured sand and the relationship with binder composition are as follows:sands bonded by binders that are not modified have high strength when dry temperature is high and dry time is long,but their anti-wettability power is poor . Sands bonded by binders that are modified by B but not modified by M can be dried quickly and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M but not modified by B can also be dried quickly to obtain maximum strength,then the strength becomes lower when they are dried continually for more time. and sand strength is high but anti-wettability power is also poor. Sands bonded by binders that are modified by M as well as by B at the same time can be dried quickly to obtain maximum strength at low temperature and short time. But the anti-wettability of sand mold is best when they are dried at high temperature and long time.

烘干温度和烘干时间对热硬砂性能的影响及其与粘结剂改性的关系是：未经改性剂B和改性剂M改性的粘结剂砂，脱水速度较慢，烘干温度越高，时间越长，则硬化强度也越高，但未经改性的粘结剂热硬砂的抗吸湿性较差；经改性剂B而不经改性剂M改性的粘结剂热硬砂，烘干硬化速度较快，强度也高，但在高湿度下的抗吸湿性不好；经改性剂M改性而不经改性剂B改性的粘结剂热硬砂，烘干时强度先随烘干时间升高至最大值后，继续烘干时强度又出现下降；经改性剂B和经改性剂M共同改性的粘结剂热硬砂能在短时间和较低的烘干温度下就可烘干到最高强度，即烘干脱水的速度较快，但试样的抗吸湿性差，若在更高温度和更长时间下烘干，试样的抗吸湿性得到改善，综合考虑烘干强度和抗吸湿性要求，对于φ30×30mm试样，理想的烘干温度是200℃，烘干时间20分钟。

Hill sand can be used in producing high performance concrete of hill sand based on the research of high strength concrete of hill sand, hydro-concrete of hill sand and the usage of fly ash.

本研究课题是在已成功研制并实际应用的C60高强山砂混凝土的基础上，结合对微细活性掺合料性质的理论认识，充分利用贵州当地的混凝土材料，并掺入微细活性掺合料，研制一种新型的高性能混凝土，即山砂高性能混凝土。

Especially cold-resistant able to bear droughting, barren-resistant, resist sand blown by the wind, suitable for in maos of dark plain sand district popularizing and planting, the urban environment of sand district of green coverage, create the garden view with local characteristic of sand district.

尤其是耐寒、耐旱、耐瘠薄，抗风沙，适宜在毛乌素沙区推广种植，绿化美化沙区城市环境，创造具有沙区地方特色的园林景观。

The deltas differ from typical deltaic model.Deltaic front subaqueous distributary channel sand bodies and deltaic plain distributary channel sand bodies are the skeleton sand bodies of meandering stream-shallow sea delta and braided streain-shallow lake delta respectively but not tranditional deltaic front river mouth sand bars.

这两类三角洲与经典的三角洲模式不同的是，三角洲前缘水下分流河道砂体和三角洲平原分流河道砂体分别构成了曲流河浅水海相三角洲和网状河浅水湖泊三角洲的骨架砂体，而不是传统认为的三角洲前缘河口砂坝。

The sand skink is a small subterranean lizard that's virtually legless, and it swims through the sand - or just under the surface of the sand. And as it does so, it pushes up a little ridge of sand that falls down behind it, and it leaves these S-shaped curves.

沙蜥是小形的、地底下活动的蜥蝪，实际上没有脚(因为它的脚是像鳍一样推动前进而非行走)，在沙中或在沙下类似游泳前进，在它身后推挤出微小沙丘，留下s形的曲线。

Current various product lines are as follows: 3 static press Molding Line, 5 Air Impact lines, 6 Resin Sand lines, 2 Lipid Vulcanize Water Glass Sand lines, 10 Jolt-Squeeze Mechanical Molding lines, 3 Shell Molding lines with Resin Sand, 4 Sand Coated Iron Mould lines used for Ferrous Moulding, 11 investment casting lines, 5 Precision Casting of Lost Form lines, 27 Die Casting lines, 22 Gravity Casting of non-ferrous Metal lines and 16 Low Pressure Die Casting lines.

现有各种生产线构成如下：静压造型线3条，气冲生产线5条，树脂砂生产线6条，脂硬化水玻璃砂生产线2条，震压式机械造型生产线10条，壳型铸造生产线3条，黑色金属铁模覆砂生产线4条，熔模精密铸造生产线11条，消失模生产线5条，压铸生产线27条，有色金属重力铸造生产线22条，低压铸造生产线16条。

Static press Molding Line, 5 Air Impact lines, 6 Resin Sand lines, 2 Lipid Vulcanize Water Glass Sand lines, 10 Jolt-Squeeze Mechanical Molding lines, 3 Shell Molding lines with Resin Sand, 4 Sand Coated Iron Mould lines used for Ferrous Moulding, 11 investment casting lines, 5 Precision Casting of Lost Form lines, 27 Die Casting lines, 22 Gravity Casting of non-ferrous Metal lines and 16 Low Pressure Die Casting lines.

现有各种生产线构成如下：静压造型线3条，气冲生产线5条，树脂砂生产线6条，脂硬化水玻璃砂生产线2条，震压式机械造型生产线10条，壳型铸造生产线3条，黑色金属铁模覆砂生产线4条，熔模精密铸造生产线11条，消失模生产线5条，压铸生产线27条，有色金属重力铸造生产线22条，低压铸造生产线16条。

Gramineae and Compositae by the shifting sand to the fixed sandy land, the species of which changed greatly, that indicated they were playing a great role in the recovery of the sands. Asclepiadaceae plants could serve as a indicative plants to distinguish between the types of shifting sand and other sand; Portulacaceae and Bibgnoniaceae plants, which appeared only in the fixed sandy land, has become a landmark to determine the fixed sand plants. In addition to artificially plant Caragana spp. and Artemisia spp.

豆科和藜科植物作为流动沙地的先锋物种，表现出较强的适应能力；禾本科和菊科植物由流动沙地到固定沙地，其种类变化较大，表明其在沙地恢复中发挥着巨大的作用；萝摩科植物可作为区分流动沙地和其它沙地类型的指示性植物；马齿苋科和紫薇科植物仅在固定沙地中出现，已成为判断固定沙地的标志性植物。

The circulation, consumption and reproduction of the trilogy have not only testified to its historical significance and literariness, but also invested it with new meanings.

该三部曲的流通、消费与再生产不仅验证了其历史意义及文学性，而切还赋予它以新的意义。

If he thought that he could buy me off, he would be wrong.

如果他认为他可以收买我，那他就大错特错了。