Introduced in the paper is a newly developed centring - roll system used on rotary pipe mill.介绍了一种用于斜轧钢管生产的新式定心辊装置.Mainly applied in electric control system of masticator, banbury mixer , and other roll mill etc.我需要“密炼机 ...
"What a surprise!" Caroline murmured sarcastically.“太神奇了!”卡罗琳轻声挖苦道。In certain conditions, answering back sarcastically is necessary.在某种情况下, 反唇相讥是必要的." Full of lucky words , aren't you? " demanded the old man , sarca...