词汇	black grease
释义	black grease 黑润滑膏
随便看	integral bounary integral boundary integral boundary condition integral boundary conditions integral boundary value condition integral boundary value problem integral bourrelet integral bracelet integral bracket integral brake integral breadth integral bridge integral bridge abutment integral bridge abutment beam integral bridgedeck integral bridge without expansion joint integral bulkhead of titanium alloy integral bumper integral bypass integral by-pass system integralc action coefficient integral cage integral calculation integral calculation method integral calculus