The microcracks have certain effects on reducing the average thermal expansion coefficient, nevertheless they decrease the mechanical strength of the ceramics.
微裂纹对降低陶瓷材料的平均膨胀系数有一定作用，但同时又降低了材料的机械强度。
The microcracks have certain effects on reducing the average thermal expansion coefficient, nevertheless they decrease the mechanical strength of the ceramics.
微裂纹对降低陶瓷材料的平均膨胀系数有一定作用，但同时又降低了材料的机械强度。
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