root penetration的例句大全

The results show that the substitutional electrode has high penetration efficiency, excellent arc stability, good fluidity melting slag and electrode root without reddening, covering without peeling, etc.

结果表明，试验焊条具有电弧稳定、熔渣流动性良好，焊条尾部不发红、药皮无脱落等特点；

Influence of Irrigation and Penetration through Ditch on Shape and Function of Direct-Seeding Rice Root System

沟灌渗透对直播水稻根系形态及功能的影响

There is B penetration in cladding inner surface, the amount of B penetration is propotional to the square root of the test period.

包壳管内表面渗B，渗B量与相容时间的平方根成正比，渗B深度不随相容时间变化；

incomplete penetration is the main defect in the welding root of the tubular joint in steel truss framework.

钢桁架结构管节点焊缝根部存在的主要缺陷为未焊透，它的存在对焊缝的质量有很大的影响。