It is assigned by the placer.

它是由放置器指定的。

youdao

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。

youdao

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。

youdao