English ⇄ Chinese Russian

fouled ballast stresses
O&G, tengiz.	балласт низкокачественный балласт; грязный балласт; загрязнённый балласт (ballast that has had all voids between aggregate filled with undesirable fines which prevent ballast from draining properly)
railw.	загрязнённый балласт

fouled ballast: 1 phrase in 1 subject

Rail transport

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