expectance的意思？

Slecve bearing life expectance: 20,000 hours minimum.含油轴承预期寿命: 至少20,000小时.Modern school of currency and school of reasonable expectance systematized methods of substantial evidence analysis.现代货币学派和理性预期学派将实证分析方法系统化....

expectance的音标：expectance的英式发音音标为：[ɪks'pektəns]expectance的美式发音音标为：[ɪks'pektəns]...