Freezeproof durability of roll compacted concrete engineering in northwest cold and dry areas can not be guaranteed because entrainment of air is difficult.
西北高寒干燥地区的碾压混凝土工程，由于引气困难，导致其抗冻耐久性得不到保证。
Depressed trough, manhole edges and other places where the roller can not reach shall be compacted with frog rammer.
在压路机不能达到的路槽和检查井边缘，采用蛙式打夯机夯实。
Unbounded, loose substrates do not transfer and store heat like bound and compacted materials do.
无边界的松散材料不像有边界的紧实材料那样传递和储存热量。
This does not mean one can neglect the quality of the support, as field seaming can be done only on a compacted, flat surface.
但这并不以为着我们就能忽略其他方面，如现场焊接只能在压实和平稳的地面进行。
No-till also does not work in compacted soils.
无耕也不能用在压实土上。
If the compacted treatment degree and chill capacity of chiller are not enough to obtain fine spheroidal graphite layer, the service life of glass mold is short.
如果蠕化处理程度和冷铁激冷能力无法形成球墨层者，使用效果较差。
The deep compacted condensate gas reservoir does not conform to technical law of conventional gas development.
深层致密凝析气藏不符合常规气藏有关开发技术规律。
The deep compacted condensate gas reservoir does not conform to technical law of conventional gas development.
深层致密凝析气藏不符合常规气藏有关开发技术规律。
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