The Encyclopedia Americana: The International Reference Work, Volume 7Americana Corporation, 1960 - Encyclopedias and dictionaries |
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Page 72
... operation breaking up the clay as pressure increases between roll and housing . The double roll crusher performs the same two operations , tearing and crushing . It is con- structed of two rolls equipped with teeth . The teeth serve to ...
... operation breaking up the clay as pressure increases between roll and housing . The double roll crusher performs the same two operations , tearing and crushing . It is con- structed of two rolls equipped with teeth . The teeth serve to ...
Page 81
... operation . The operation is not dangerous . Plastic surgery to repair a cleft palate may be performed as early as 14 to 18 months , de- pending upon the child's growth and development . In many instances it is preferable to close the ...
... operation . The operation is not dangerous . Plastic surgery to repair a cleft palate may be performed as early as 14 to 18 months , de- pending upon the child's growth and development . In many instances it is preferable to close the ...
Page 612
... operation , and since the material is carried and the speed of operation is slow , power consumption , mainte- nance , and depreciation are low . To prevent spillage the buckets are usually designed to over- lap when traveling on the ...
... operation , and since the material is carried and the speed of operation is slow , power consumption , mainte- nance , and depreciation are low . To prevent spillage the buckets are usually designed to over- lap when traveling on the ...
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