SPARE PARTS FOR GEAR UNITS请问此货名是什么,

SPARE PARTS FOR GEAR UNITS请问此货名是什么, 英语翻译request for spare parts和request of spare parts Spare parts for aeroplanes 为什么不是Spare parts of aeroplanes Spare parts for aeroplanesfor“是什么意思 翻译spare parts for the human body she has sent many requests for spare parts.能不能改成 .requests of spare parts trucks spare parts spare parts怎么设置 spare parts:1% listed spare parts management是什么意思 bf spare parts 是什么 什么是spare parts inventory? 什么是howo spare parts spare parts for aeroplanes.疑问为什么用for 不用 of ?全句In his twenties Frank used to make spare parts for aeroplanes. he has sent requests for spare parts.he has __spare parts.(asked/asked for /begged /pleased)分别什么意思?为什么? he has sent requests for spare parts.he has __spare parts.(asked/asked for /begged /pleased)分别什么意思?为什么? Mr.Scott has sent a great many requests for spare parts 里的for是什么意思 英语翻译auto spare parts and accessories -wheel hub bolts and nuts -timing kits -distributor assembly -steering hose -rubber parts as CV joint boot,steering boots,engine mounting -CV joint -flywheel ring gear - car mats 急,请尽快啊