壳聚糖和蛋白质之间以弱键结合。

The combination between chitosan and protein was very weak.

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煤资源丰富、价格便宜、煤存有弱键和矿物质等特性决定了煤可以作为制备碳纳米管所用的碳源。

As a source material, coal is cheap and abundant and has unique weak bonds and mineral matter, therefore, may be utilized in the nanotubes preparation.

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用于存储键-值映射的 Entry 类型扩展了 WeakReference，因此当 expungeStaleEntries() 要求下一个失效的弱引用时，它得到一个 Entry。

The Entry type, which is used to store the key-value mapping, extends WeakReference, so when expungeStaleEntries() asks for the next expired weak reference, it gets back an Entry.

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So what we see is a bond order of 0, and again, the bond is very, very weak.

我们看到键序是0，同样的，键非常非常的弱。

麻省理工公开课 - 化学原理课程节选

So, in general what we see, and this is always true if we're comparing the same atom, and in general, if we're comparing different types of molecules, but we know that a single bond is always weaker than a double bond, which is weaker than a triple bond.

通常我们会看到，这对比较相同原子来说总是正确的，通常，如果我们要比较不同种类的分子，但我们知道单键,总是要比双键弱，双键总是要比三键弱。

麻省理工公开课 - 化学原理课程节选

And obviously, no bond is the weakest of all is not bonding.

显然，没成键是最弱的。

麻省理工公开课 - 化学原理课程节选