Flanges may be made by sections; joints shall be beveled and field welded; bolt holes of two connecting flanges must be drilled together.
法兰允许按箱体分段制作固焊；接头处打坡口，工地拼接；法兰板连接孔须两两配钻制孔。
Its welded black metal screens visually delimit the space and maintain the full depth of field of the entire volume.
其黑色金属焊接的屏幕视觉上划定了空间，维护整个体块区域的景深。
Using experimental mechanical method of moire analysis, strain field distributions of LY12CZ aluminum alloy welded joints under different conditions were investigated.
采用云纹分析的试验力学方法，研究了不同情况下LY 12 CZ高强铝合金焊接接头应变场的分布特点。
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