Presence of tooth-root and mandibular implants 具有牙根和下颌骨植入物
In these cases also, the presence of multiple co-located applications might make it more difficult to drill down to the root cause.
在这些情况下，多个应用程序的共存可能使探究问题的根本原因更加困难。
The root causes of motorcycle cylinder block wearing are temperature variation and presence of hard abrasive dust.
摩托车发动机气缸磨损的根本原因在于温度的变化和硬质磨粒的存在。
The experiments showed that the rooting ability of hardwood cuttings was determined by both presence of latent root primodia and balance of endogenous hormones bark.
试验表明，硬枝扦插生根是潜伏根原基存在与否和皮部内源激素平衡两方面的原因决定的。
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