tar pitch meaning in Chinese

焦油沥青
硬柏油

Method for preparation of coal tar pitchs specimens
煤沥青试验室试样的制备方法
Development of mesophase prepared from coal - tar pitch
煤沥青中间相的研究进展
Method for determination of coal tar pitch ash content
煤沥青灰分测定方法
Methods for testing creosote oil , prepared tar and tar pitch
杂酚油精制焦油和焦油沥青的测试方法
Creosote oil ? prepared tar ? tar pitch
杂酚油精制焦油焦油沥青

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