pit

1、在仪表专业中，现场压力变送器常常用符号PIT表示，其中I表示（）。

在仪表专业中，现场压力变送器常常用符号PIT表示，其中I表示（）。AA、电流BB、压力CC、电压DD、带指示功能

2、Pitting in the suction areas of a cent

Pitting in the suction areas of a centrifugal pump bronze impeller is usually caused by （）.AcavitationBelectrolysisCabrasionDcorrosio

3、Pitting in the area close to the pitch

Pitting in the area close to the pitch line and on the same end of each gear tooth of a reduction gear unit would be caused by （）Acorrosion on the gearsBexcessive gear speedCdirt in the oilDmisalignment of the gear

4、Pitted reduction gear teeth having a d

Pitted reduction gear teeth having a deep blue color with evidence of overheating have been operated with （）Aexcessive speedBimproper warm-upCextreme misalignmentDinadequate lubricatio

5、.PIT的定义是什么？

.PIT的定义是什么？

6、PIT定义

PIT定义