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1·It is assigned by the placer.

它是由放置器指定的。

2·Indonesia is rich in gold placer resources.

印度尼西亚砂金资源丰富。

3·Placer deposit is highly developed in USSR.

苏联的砂矿矿床比较丰富。

4·The origin of the deposit belongs to Quarternary eluvial placer type.

矿床成因属第四纪残积型。

5·The coefficient of dissolution can indicate the source of placer gold.

溶蚀系数可指示砂金是近或远原生源金矿。

6·Site investigation drill and placer exploration drill have much in common.

工程勘察钻机和砂矿钻机之间具有许多共同之处。

7·Shore REE placer is one of the most important exogenetic ore deposits of REE.

外生稀土矿床中最重要的是海滨砂矿。

8·This primitive form of placer mining is still used in some places for panning gold.

这种原始的砂矿开采形式至今还在一些地方用来淘金。

9·Liaoning Xiuyan nephrite Placer deposit (XNPD) is a secondary deposit of primary nephrite ore.

辽宁岫岩软玉砂矿(又称河磨玉矿)是原生软玉矿的次生砂矿床。

10·I got educated on placer mining, and heard all about the controversy over the use of water cannons.

我得到的教育砂金开采，并听取了所有的争议，使用水炮。

(1)placer gold砂金；沙金

(1)placer deposit砂矿床；砂积矿床；砂砾矿床

(1)placer mining砂矿开采；淘金