seam sample的意思|示意

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seam sample相关短语

1、 workable seam sample 可采煤样

2、 coal seam sample 煤层煤样

3、 stratified seam sample 分层煤样

4、 ruinable coal seam sample 可采煤样

5、 seam-sample of coal 煤层煤样

6、 stratified coal seam sample 分层煤样

7、 workable seam-sample of coal 可采煤样

8、 stratified seam-sample of coal 分层煤样

9、 coal seam s coal sample 煤层煤样