ON THE BLOODSUCKING TABANIDS FROM SOUTH CHINA ( DIPTERA: TABANIDAE )华南地区吸血虻类记略 ( 双翅目: 虻科 )The bloodsucking louse also transmits various commutable diseases such as endemic typhus, trench fever relapsing fever.虱吸血还可传播各种流行...
导线的两端联接到裂环整流器.The two ends of the wire are connected to a split - ring commutator.同步 低频 整流器与推挽整流器相似.The synchronized low - frequency rectifier is similar to a push - pull rectifier.低谐波 、 高功率因数 、 带有滤波器件的整流器.Low harmonics,...
"Where did you get that embroidery?" — "I made it myself."“你从哪儿弄到那件刺绣品的？”——“我自己绣的。”You can use embroidery stitches for further decoration.你可以用刺绣来作进一步的装饰。She learned sewing, knitting and embroidery.她学了缝纫、编织和刺绣。...