Inapparent or subclinical infections occur when too few cells are infected to cause clinical symptoms.

隐性或亚临床感染发生在感染细胞数量很少以至于不引起临床症状。

For rivers with lower concentration of suspended sediment, effect of concentration on settling velocity is inapparent.

对于含沙浓度较低的河流，浓度对沉速的影响不显著。

Compared with ATP-activated current, the NPA-activated current was of smaller amplitude and showed inapparent desensitization.

与ATP -激活电流相比，NPA -激活电流幅值小，无明显去敏感现象。

The effect on bearing capacity of lengthwise ribs was inapparent, but which can effectively improve the pile rigidity, efficiently reduce circular rib's punching failure.

纵肋对提高桩体承载力的作用并不明显，但可有效提高桩体的刚度，助于缓减环肋的冲切破坏。