If the formation water in Guantao formation is used as a source of water injection, swelling preventing agent shall be added to the injected water to prevent formation damage from hydrated clay swell.
若将馆陶组地层水作为注入水水源，必须在注入水中加入防膨剂以防止由于粘土水化膨胀而造成的地层伤害。
But veneer particleboard furniture to a part of the edge must, because no edge board will absorb moisture, swell and damage.
而且刨花板贴面家具着地部分必须封边，因为不封边板就会吸潮、发胀而损坏。
Expansive soil is a kind of swell-shrinking clay with strong damaging to highway. In order to lessen the damage, some efficient measures must be taken with from design.
膨胀土是一种吸水膨胀、失水收缩、胀缩变形显著的粘性土，其主要工程性质对公路有比较强的破坏作用，要减少膨胀土对路基路面的破坏，必须从设计上采取措施加以处理。
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