initial ray原始射线initialn.(词)首字母adj.开始的；最初的；字首的vt.签姓名的首字母于initial property rights初始产权initial stage of mining初采initial gamma radiation初始γ辐射Initial Approach Course最初进场航向initial fault diagnosis早期故障诊断initial stage of cancer癌症初期initial operation stage初期运行期initial fatigue quality原始疲劳质量initial orbit computing初轨计算initially pulling force初拉力