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- This paper analyses in quantity for the key factors to influence the fold and unfold of the grab bucket in the four-drum grab bridge ship unloader. 对四卷筒抓斗卸船机抓斗开闭的影响因素进行定量分析,根据悬索理论,给出了悬垂段钢丝绳的悬垂方程。
- These students must quickly fold and unfold the heavy cards at the flag signals with undivided attention for the entire duration of the three-hour performance. 在进行表演的三个小时里，两万个孩子必须专心致志地、有节奏地折叠、展开沉重的领袖肖像牌和彩旗标语。
- Photos, letters, clippings, and other family documents should be stored unfolded because folding and unfolding breaks paper along the fold lines. 照片、信件、剪报或其他家庭文献应该以展开的方式储藏，因为折叠和展开会损害纸张的折线。
- Look for typical examples and unfold criticism and self-criticism. 找典型，批评和自我批评。
- Fold two 24-inch lengths of aluminum foil in half crosswise, and unfold. 取两个24英寸长的铝箔，在中间部分折叠，再展开。
- Carefully she rubbed and ironed every fold and every hem. 她小心翼翼、一丝不苟地熨着每一个褶痕和贴边。
- We have studied protein folding and unfolding by NMR together with fluorescence and circular dichroism experiments. 与圆二色谱及荧光光谱结合，核磁共振可以详细表征蛋白质的折叠与去折叠。
- My Husband will sometimes help me fold and stuff the envelopes. 我的丈夫有时愿意帮助我折叠和塞信封。
- fold and unfold 折叠与展开
- Second stage, pneumatic stop pushes front edge to fold and laminate rear edge. * 第二段，纸张前缘经前推气动挡板之作用，先折边后贴合完成.
- This booklet illustrates simple actions including fold, press, crease, pleat, score, cut, pull up, rotate, twist, revolve, wrap, pierce, hinge, knot, weave, compress and unfold. 这本小册子图解了简单的操作包括折、压、折缝、打褶、刻痕、切、拔起、旋转、扭弯、绕转、包裹、穿透、打结、编排、压缩和展开。
- He sat down and unfolded the newspaper. 他坐下打开了报纸。
- Please put your sail on the table and unfold it. I will check and stamp on it. 请把你的帆放在桌子上展开，我要检查一下并在上面盖章。
- I opened the envelope and unfolded the letter inside . 我打开信封，展开了里面的信。
- I opened the envelope and unfolded the letter inside. 我打开信封,展开了里面的信。
- Constant folding and constant unfolding are inverses. 常数合并和常数展开是相反的。
- She opened the envelope,took out the letter,and unfolded it. 她拆开信封，取出信，展开信纸。
- There was too much pressure on him, so he folded and lost the game. 因为他的压力太大了,所以他放弃,乃至于输掉了比赛。
- We invited the professors and unfolded technological salon. 多次邀请专业人士前来讲座，开展丰富多彩的技术沙龙。
- Third stage, pneumatic stop pushed rear edge to fold and laminate front edge. * 第三段，纸张后缘经后推气动挡板之作用，先折边再贴合完成，送入收纸台.
