General loading condition of rolling mill bearings is medium - heavy load and shock load, thus the most suitable material is carburising bearing steel.
轧机轴承一般载荷条件是中重载荷和冲击载荷，因此，最适用的材料为渗碳轴承钢。
The medium material, sealing soil in low contents of heavy metal and enlarged stipe strain were key to measure of approaching to lower contents of heavy metals in fruit body.
选择重金属低污染的培养料、覆土土壤和粗柄型菌株是实现姬松茸子实体重金属低富集的关键措施。
Scope of application: Fit to sew light and medium heavy material of knit, cotton and synthetic fabrics.
适用范围：适用于薄料和中厚料的针棉化纤等缝料的缝制。
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