1.
The lime-stone rocks bed up against the coal.
石为岩层紧靠着煤矿层。
2.
layer,(eg of coal,between layers of other materials,eg rock,clay)
（夹层中的） 层（如石层、黏土层之间的煤层）;矿层.
3.
a pay streak.
含有开采价值的矿层
4.
pockets of manganese in the rock;
岩石中含有锰的矿层；
5.
They extract coal from seams
他们从矿层中采煤。
6.
The Main Chromitite Seam and the Merensky Reef do not outcrop well.
主铬铁岩矿层及麦仑斯基矿层出露不好。
7.
An area in which deposits of coal are found.
煤矿区发现煤矿层的区域
8.
Study on Cation- exchange Capacity of Core from Sandstone Uranium Deposits
砂岩铀矿层矿石阳离子交换容量研究
9.
Knowledge of the occurrence of chromite deposits is likewise incomplete.
对于铬铁矿矿层产状的了解同样是不完整的。
10.
Conference on Shallow (Small) Oil and Gas
浅层(小)油矿和气矿会议
11.
horizontal cut and fill stoping
水平分层充填采矿法
12.
Coal seams intermixed with iron ore.
煤层和铁矿混杂在一起。
13.
Research on Mining Method of Thin and Multilayer Ore Bodies That Sloped Slowly of Yunnan Dayao Copper Mine;
云南大姚铜矿多层缓倾斜薄矿体采矿方法研究
14.
Significance of the Deep Ore Prospecting in Henan Sandaozhuang W-Mo Deposit
河南三道庄钨钼矿区深部下层矿的找矿意义
15.
The Middle Cambrian Tianpeng Formation has high background value of metallogenetic element, which is the advantageous ore source horizon.
田蓬组地层成矿元素高背景值,为有利之矿源层。
16.
A very popular mine, with rocks for both low and high leveled miners.
深受矿山、头都偏低,高层次的矿工.
17.
CHARACTERISTICS AND CONITROLLING FACTORS OF STRATABOUND ORE DEPOSITS IN DEVONIAN SYSTEM, NANLING REGION, CHINA
南岭泥盆系层控矿床特征及控矿条件
18.
Investigation On Switching To Other Production Of The Thin Coal Seam Mines Of Yankuang Group;
兖矿集团薄煤层矿井转产途径的探讨