weak bond

基本解釋

They are expected to update investors on how much of their holdings could be at risk of falling in value because they are backed by financially weak bond insurers.
由于為其所投資證券提供保險(xiǎn)的債券保險(xiǎn)商近來(lái)財(cái)務(wù)狀況不佳，估計(jì)他們會(huì)向投資者就其所持有證券面臨的減值風(fēng)險(xiǎn)作出更詳細(xì)說(shuō)明。
It is probably that the conjugated plane of gossypol is inserted into the base pair pleated sheet of the DNA double helical structure to associate with thymine through weak polar bond.
這表示棉酚很可能以共軛平面平行地插入到DNA分子雙螺旋結(jié)構(gòu)的堿基片層之間，與其中的胸腺嘧啶堿基以弱相互作用的極性鍵形成復(fù)合物。
The problem of early pavement damage and the weak interlayer bond issues will be solved by the result which has great utility value and far-reaching instructive meaning.
本文研究成果很好地解決了橋面鋪裝早期損壞與層間粘結(jié)薄弱等問(wèn)題，具有良好的實(shí)用價(jià)值和深遠(yuǎn)的指導(dǎo)意義。

So what actually turns out the reality is that h e 2 does exist, but it exists as the weakest chemical bond known, and it wasn't, in fact, even found to exist until 1993, so I can assure you this is not a bond that you see very often in nature, and it is a very, very weak bond.
實(shí)際上He2鍵是存在的，但它是目前所知的最弱的鍵，直到1993年它才被發(fā)現(xiàn)，所以我可以向你們保證在,自然界你們不可能經(jīng)常看到它，它是種非常非常弱得鍵。
麻省理工公開課 - 化學(xué)原理課程節(jié)選
So what we see is a bond order of 0, and again, the bond is very, very weak.
我們看到鍵序是0，同樣的，鍵非常非常的弱。
麻省理工公開課 - 化學(xué)原理課程節(jié)選

However, a report out of the UK showing that money supply is barely moving and a weak bond auction in Italy has put traders back into uncertainty mode.
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He lost his audience then and never got it back, making it clear that the bond was weak from the start, partly because of those irritating happy feet.
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