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- Photooxy-degradation(aging) will happen to polymer when they accept UV-irradiation of the sun especially weak bond or unsaturated bond as diolefine exist in macromolecular chain. 聚合物尤其是存在弱链键和双烯结构的大分子链,在接受太阳紫外线辐射后,易发生光诱发的氧化降解反应(老化)。
- But when layers form weak bonds, any new snow falls on an unstable foundation, and waits for the right trigger. 但当雪层之间的结合较弱时，新下的雪就会落在不稳定的基础上，并等待正确的触发因素。
- The spirit is willing but the flesh is weak. 心有余而力不足。
- The reduction cleaves the weak N-O bond. 这种还原反应致使弱的N-O键开裂。
- The shock make me go all weak at the knee. 这件事把我吓得两腿发软。
- You need a strong adhesive to bond wood to metal. 需要强力胶才能把木料粘在金属上。
- This glue makes a good firm bond. 这种胶水粘得很结实。
- You must be weak in the head if you believe that. 你相信那件事可就太傻了。
- Common tastes form a bond between the two men. 共同的爱好使两人结交为朋友。
- He cannot run because he has a weak heart. 他有心脏病，不能跑。
- A fearful person is a weak person. 怕这怕那的人是软弱的人。
- The shock made me go all weak at the knees. 这件事把我吓得两腿发软。
- The bond that binds the smugglers together is a rope of sand. 把走私犯联接起来的是条沙做的绳子，一碰就碎。
- His weak chest was a legacy of a childhood illness. 他那瘦弱的胸脯是儿时患病的后遗症。
- Common interests formed a bond between us. 共同的利益把我们联系在一起。
- In a weak moment, I agreed to pay for her holiday. 我一时心软同意了支付她度假的费用。
- Identity of interests is the bond that unites them. 利害的一致是把他们联合起来的纽带。
- He is weak with hunger, so I have to support him. 他饿得没有力气，我得搀着他。
- He pushed a weak student through the exam. 他帮助一位成绩差的学生通过了考试。
- He was too weak even to lift his hand. 他虚弱得连手都抬不起来。
