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請(qǐng)教大神,引號(hào)里是什么意思?怎樣理解? 已有1人參與
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the "symmetrical "Ru-Al metallic bonds improve the shear deformation resistance of rual. the calculated shear modulus of RuAl is 108 gpa. it must be mentioned that there is "3D-network "Ru-Al metallic in Ru2Al3 , which can improve the shear deformation resistance. the calculated shear modulus of Ru2Al3 is about 109 Gpa, which is lightly larger than that of RuAl . 這兩種晶體的的對(duì)稱(chēng)性為: Ru2Al3 tetragonal i4/mmm ; RuAl cubic pm-3m |
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