Compound 6 is a 1d double helical chain containing 20-membered rings (6).
化合物6是一维的双螺旋结构，由20元环状结构单元组成。
In chapter two, the minimal energy graph for fully angular hexagonal chains is helical hexagonal chain.
在第二章中，得到了全角六角链的极小能量图是螺旋链。
In general, bulky side-chain and hydrogen bonding are in favor of the formation of stable helical conformation for polymers, which endows them with high optical property and some special performance.
许多文献报道证实，庞大的侧基或具有形成氢键能力的基团有利于聚合物主链形成稳定的螺旋构象，从而赋予材料高度的旋光活性和某些特殊功能。
It is a burring equipment of machining gears, be the same with the tooth parts of spur gears, helical gears, bevel gears, chain wheel and so on.
齿轮倒棱机是对齿轮加工过程中形成的毛刺进行处理的设备。适用于加工各种直齿、斜齿、伞齿、链轮等齿形零件。
It is a burring equipment of machining gears, be the same with the tooth parts of spur gears, helical gears, bevel gears, chain wheel and so on.
齿轮倒棱机是对齿轮加工过程中形成的毛刺进行处理的设备。适用于加工各种直齿、斜齿、伞齿、链轮等齿形零件。
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