砂金

The samples studied here appear to be sunstones as they readily display aventurescence.

由于该样品具有明显砂金效应的外观特征，使其看起来就像是日光石。

The paper focuses on the study of genetic information of gold placers.

对砂金矿的成因信息进行了全面的研究。

The paper discusses the formation conditions of gold placers in 2 aspects.

从物源和成矿环境两方面对砂金成矿条件进行了讨论。

Further study shows that the chemical compositions of gold grains in some gold placers change sharply, which indicates their different sources.

研究结果还表明，有些矿区的砂金成分变化较大，物质来源复杂。

The regeneration of gold placers in mining out areas is primarily the reconcentration of relic gold.

过采区砂金矿的&再生&，主要是残余金的再次富集所致，其成矿动力主要是冻融作用

The primary provenance of gold placers are various gold deposits and gold mineralization zones of pre-Mesozic Era.

砂金矿的主要原生物源是前中生代各类金矿床和金矿化体，它们多已风化、剥蚀殆尽，而中生代晚期岩金矿体得以保存

The metallogenic process of gold placers in the studied region was controlled by 3 factors (material sources, neotectonic movement and climate).

本区砂金矿的成矿过程受物源、新构造运动和气候三个因素控制，经流水作用富集成矿，多年冻土主要起保护矿体的作用。

Some coarse gold tin chute chute and sand followed are still used. The mid-19th century, experienced a mechanical transmission belt chute chute and round, becoming one of the major fine-grained non-ferrous metals ore sorting equipment.

有些粗粒砂金溜槽和砂锡溜槽沿袭至今仍有使用。19世纪中叶出现了机械传动的带式溜槽和圆形溜槽，成为当时细粒有色金属矿石的主要选别设备。

Due to power failure suddenly,the lifting system of sand pump in alluvial gold mine is frequently blocked up.

砂金矿山所用砂泵提升装置因突然停电而堵塞提升系统。

In the most complex placer mining, groups of prospectors would divert the water from an entire river into a sluice alongside the river, and then dig for gold in the newly exposed river bottom.

70最为复杂的砂金开采方式是由探矿人员将河流中的水引进河边的一个水闸，然后从刚刚暴露出的河底部分发掘黄金。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。