Our company is specialized in producing and processing various cardboard thickness of the operation of enterprises.
我公司是专业生产及加工各种厚度纸板的经营性企业。
The causes producing wall thickness difference in a same pierced shell are expounded and the influences of piercing, rolling and mandrel drawing on the difference are studied.
阐述了穿孔毛管产生同管壁厚差的原因，研究了穿孔和轧管工艺对钢管同管壁厚差的影响。
Researchers have been attempting todevelop such coatings for decades, but existing methods for depositingthem—such as spraying—have trouble producing the correct thickness.
研究人员几十年来一直在尝试研发这种新型涂料，但是现有的涂覆方法，比如喷涂法，都很难得到合适的厚度。
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