该工艺可用于各类烘焙硬化和气体硬化型芯的硬化。
The technology can be applied to the multifarious moulds and cores which can be hardened by heat enginery.
该粘结剂采用PVA17-99为主要原料，通过改性等实验方法，并利用正交试验优化改性参数，制备了一种常温下呈液态的粘结剂，使用此种粘结剂的型砂可以通过吹入CO2气体硬化。
The main material of the binder was PVA17-99, the liquid binder was produced by means of modifying experiment and orthogonal test . The binder could be hardened by blowing CO2.
羊毛和毡绝缘表面的硬化增强了产品对高速气体侵蚀性的抵抗能力，同时也降低了渗气性。
Hardening of the surfaces of blanket and felt insulation improves the resistance to erosion by high-velocity gases and reduces the permeability of gases.
酒精气体发生剂具有安全性高而且很强地抑制菌类繁殖的能力，有防止食品硬化的效果。
Alcohol gas generating agent had high security and strong ability to inhibit the fungi reproduction, and had the effect of preventing food hardening.
复经水泥凝结硬化在砼中形成一种多孔结构，这程砼称之为载气体多孔砼。
Then it is followed by cement setting and hardening and a cellular structure is formed in the concrete, which is called gas-carrier cellular concrete.
液体渗氮可以获得厚度为0.001到0.012英寸（0.03~0.30mm）的硬化层，然而气体渗氮则能获得厚0.025英寸（0.64mm）的硬化层。
Case thickness of 0.001 to 0.012in. (0.03~0.30mm) is obtained, whereas for gas nitriding the case may be as thick as 0.025 in. (0.64mm).
液体渗氮可以获得厚度为0.001到0.012英寸（0.03~0.30mm）的硬化层，然而气体渗氮则能获得厚0.025英寸（0.64mm）的硬化层。
Case thickness of 0.001 to 0.012in. (0.03~0.30mm) is obtained, whereas for gas nitriding the case may be as thick as 0.025 in. (0.64mm).
应用推荐