Wrap it up in newspaper. black and white photographic sheet papers for general use 用白报纸把它包起来。普通黑白活页摄影相纸
Black specks in film or sheet – especially in light-colored or clear plastics – lead to scrap, unscheduled shutdowns, and dissatisfied customers. 薄膜或者片材上的黑点,特别是浅色或透明塑料,会导致废料、不必要的停机以及客户不满。
He covered the box with a black sheet. 他用一块黑布覆盖住这个箱子。
Black is my refuge, it is a line on a blank sheet of paper. 黑色是我的庇护所,是白纸上的线条。
Black Tarnishing Phenomenon of Chromate-Free Anti-Fingerprint Galvanized Steel Sheet 无铬型耐指纹电镀锌板黑变现象探究
Install top layer ( Pre-fabricated black rubber shred roll sheet) in one direction. Gaps between roll sheets can allow material expansion. 同一方向铺设表层(黑橡胶粒预制板)。板间为材料的胀缩留下缝隙。
The design of drawing process for automobile panel is called as design "black box" in sheet metal forming domain, while the die-face design of drawing die is the key part. 汽车覆盖件拉延工序设计被称为薄板冲压成形领域的设计黑箱问题,而拉延模型面设计是其中的核心内容。
Effects of Pb Ion on the Formation of Black Patina of Galvanized Steel Sheet 铅离子对电镀锌钢板黑变的影响
The morphology, composition and structure of black tranished film on the surface of electrodeposited zinc steel sheet without water cleaning were investigated by means of SEM, EDX, XRD and XPS, and the formation of black tarnished film was also discussed. 应用SEM、EDX、XRD及XPS等技术研究了无水洗电镀锌钢板表面黑变膜形貌、组成与结构,并对黑变的原因进行了讨论。
Natural black granite was ground by using an electroplated diamond wheel and brazed monolayer diamond wheels, on which diamonds were distributed in four different modes. The temperature responses at contact zone were measured by sheet thermocouples and the spindle power was also monitored in grinding process. 采用4个不同排布方式的钎焊金刚石砂轮和1个电镀金刚石砂轮磨削天然黑色花岗石,用薄片热电偶检测磨削弧区温度信号,同时测量了磨床主轴的功率。
The Forming Cause for Air Bubble and Black Pockmark and Elimination Measure in Producing Process of Aluminium Sheet Strip 铝板带生产中气泡和黑麻点缺陷的成因及其预防措施