The comet's interior, meanwhile, says Holger Sierks of the Max Planck Institute for Solar System Research, in Göttingen, Germany, has only half the density of water.
供职于德国哥根廷马克思普朗克协会进行太阳系研究的霍尔格思科表示，这颗彗星的内部密度仅为水的一半。
The thesis exploited the dynamic system of monitoring the water of bed plate and apical plate applying the technique of high density electrical resistivity.
本论文创造性地应用高密度电阻率技术，开发出了采场底板破坏及底板水动态监测系统。
Establishing the relation between canal density and canal-system water use efficiency can facilitate the evaluation of the influence canal distribution on canal-system water use efficiency.
渠道密度与渠系水利用系数两者之间关系式的确立，有助于从理论上评价渠道分布对渠系水利用系数的影响。
Matric suction is relevant with temperature of water-air system, density of pore-water, and relative humidity of pore-air of unsaturated soil.
非饱和土的基质吸力与其中水—气体系的温度、孔隙水的密度和孔隙气的相对湿度有关。
The effect of formula and firing system has been probed on the main characteristics of product, such as thermal conductivity, water absorptivity, density and strength.
探讨了原料配方、烧成制度对制品的主要性能，如：导热系数、吸水率、密度和强度的影响。
On the YuHe water system in the ancient city of lijiang, over 354 Bridges, the density of the average per 93 square kilometers.
在丽江古城区内的玉河水系上，飞架有354座桥梁，其密度为平均每平方公里93座。
Based on the suitable channel model, an implementation of quasi-cyclic low density parity check codes (QC-LDPC) for acoustic communication system in shallow water is demonstrated.
讨论了准循环低密度校验码(QC - LDPC)在浅海水声信道中的实现方案。
Desciption: Weight coating system composed of cement, water, aggregates, heavy or light depending on the required density and reinforcement.
说明：混凝土配重涂层系统由水泥、水、骨料(按照具体的密度要求使用重骨料或轻骨料)和加固材料组成。
Desciption: Weight coating system composed of cement, water, aggregates, heavy or light depending on the required density and reinforcement.
说明：混凝土配重涂层系统由水泥、水、骨料(按照具体的密度要求使用重骨料或轻骨料)和加固材料组成。
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