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- The witness held back material facts, ie ones that might influence a decision. 证人隐瞒了重要事实.
- PVC INSULATION TAPES are made from polyinyl choride(PVC) as the backing material, which are coated with rubber Pressure-sensitive adhesive. PVC电气绝缘胶带：是以聚氯乙烯薄膜为基材，涂以橡胶型压敏胶制造而成。
- PVC INSULATION TAPES are made from polyvinyl choride(PVC)as the backing material,which are coated with rubber Pressure-sensitive adhesive. PVC电气绝缘胶带：是以聚氯乙烯薄膜为基材，涂以橡胶型压敏胶制造而成。
- A new glass cloth laminate was prepared by using benzoxazine as liquid cement, alkali-free glass cloth as backing material, and treating with cement dipping, baking and pressing. 并以苯并恶嗪预聚体为胶液、无碱玻璃布为基材,经浸胶、烘焙、压制制得一种玻璃布层压板。
- The result shows: using SBS/SIS as backing material and CR(A-90)as grafting matrixes,an adhesive after the graft modification by mixing AA/BA/MMA/epoxy acrylate/MAH/N-MAM/GDMA/TMPTMA/VAc shows greater anchoring strength on polarity material-canvas. 结果表明:以SBS/SIS为基材,以氯丁橡胶(A-90)为接枝母体,用AA/BA/ MMA/环氧丙烯酸酯/MAH/N-MAM/GDMA/TMPTMA/VAc混合单体进行接枝改性制得的胶粘剂对极性材料帆布的粘附力较强;
- As the double-sided term implies,the tapes use selected adhesives to coat both sides of backing material,They are then pressed on to release paper for separation purposes.Double-sided tapes are intended to replace glue for bonding and fixing purposes. 双面胶粘带是在基材的两面涂上压敏胶，再覆以易剥离的离型材料制造而成，广泛用于两物体的和固定，使用十分方便。
- In order to expand the kind of backing material and produce thick film (>50um) of low inner stress and other high performance film, a pulsed negative bias voltage technique is using in the AIP craft along with the developing of pulsed power technology. 为了扩大电弧离子镀的基材范围和用电弧离子镀设备制备出内应力较低的更厚镀层以及其它类型应用的高性能镀层，随着脉冲功率技术的发展，一种脉冲负偏压工艺开始用于电弧离子镀技术。
- Rose bushes shoot again after being cut back. 玫瑰丛修剪後还能再长出新枝。
- Protective tapes have a wide range of applications. They can be made from backing materials of polyethlene(PE), soft polyvinylchloride(SPVC) and then coated with either acrylic or rubber PSAs. 保护胶粘带是以聚乙烯薄膜，聚氯乙烯薄膜等为基材，涂以特殊丙烯酸酯或橡胶压敏胶制造而成。
- He trudge three hour in the snow to get back home. 他在雪中跋涉三个钟点才回到家。
- The crowd fell back to let the players through. 人群后退让运动员们通过。
- Do exercise every day and you'll be back in condition. 每天锻炼锻炼，你很快会恢复健康的。
- The ship beat back against a monsoon. 船逆着季风艰难地行驶。
- The new leader has a large backing. 那位新领导人有大批的支持者。
- I flap the flies away but soon they fly back. 我把苍蝇赶走，但一会儿又飞回来了。
- I never lend books; you never get them back. 我的书决不外借，因为总是有去无回。
- She leaned her head back and whispered the news. 她向后仰着头，小声说出了这个消息。
- The talks have been put back to Friday morning. 谈判推迟到星期五早上进行。
- He hated to tuck his tail and back down now. 他讨厌此时夹着尾巴退回来。
- After a long coma the sick man slowly came back. 昏睡了好久以后，那个病人慢慢地恢复了活力。
