所有科技知识-科学时代

科学时代收录了3405121条科普词条，基本涵盖了常见科普常识及英语词汇的翻译，是科学学习和研究的有利工具。

double prism	double prismatic square	double prism field glass	double prism monochromator	double probe
double probe method	double product	Double profile	double projection	double promoted catalyst
double protractor	Double Pt.	double pulsar	double pulse	double pulse generator
double pulse recording	Double pulse testing{=DPT}	double pulse testing{=DPT}	double pulse train	double pulsing
double pump	double pumpcrete machine	double punch	double punch and blank column detection	double punching
double punching machine	Double pupil	double purchase	double purchase winch	double purging
double purpose	double pyramid	double quadrature	double [quantum] well	Double quantum well
Double quartan; Double quartan malaria; Double quartan malarial fever	double quartan malaria	double quartet	double quasar	double quenching
double quote	double quotes	Double quotidian malaria	doubler	Doubler
double rack	double radial engine	double radio source	double rail logic	double rail track circuit
double range echo	double-range voltmeter	double rating	double-ratio estimator	double Rayleigh fading
double Rayleigh scattering	doubler circuit	double reaction	double reaction method	double reaction theory
double reading	double recess	double reciprocal plot	double-reciprocal plot	double recording
double recording check	double rectification column	double recursive	double reduced{=DR}	double reduction
double reduction (Darlington 1929)	double-reduction final drive	double reduction gear	double-reduction gearing	double-reduction motor
double reduction thrudrive	double reed	double reed instrument	double reeling machine	double refectro antenna
double refining	double-refining	double-reflecting plate bomb	double reflection	double reflection tube
double refracting spar	double refraction	double refractive	double refractive index	double register
double registration	double regulation	double relay mechanism	Double renal pelvis; Duplication of renal pelvis	double reset
double resist process	double resolution	double resonance	double resonant oscillator	double resonator
double retort underfeedstoker	double return valve	double-return valve	double-return wind tunnel	double reversal
double reversal design	double reversible tramway	double reversing	double-revolving-field theory	double ribbon
double ridge waveguide	double right rotation	double ring	Double ring	double-ring oil sealing
double ring valve	double ring zoom	double-riveted butt joint	double riveted joint	double riveted joint; double riveting
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