求翻译：教育投影系统采购越来越集中，使得投影机和投影幕供应商在与采购单位洽谈中，话语权不断削弱。价格需求越来越低、回款周期较慢的教育行业用户，在整体销售中的利润也越来越小，其更大的采购批量只能给渠道带来数量的优势。因此我们预计今年教育投影机系统采购浪潮中，可能依然是几个常见主流品牌在搏弈。是什么意思？

Education and projection system procurement is increasingly concentrated, projector and projection screen suppliers in negotiations with the procurement unit, the right to speak eroding. Price demand is getting lower and lower, the the slower payback period of the education industry users, profits a

The projection system procurement and more concentrated, so that projector and projection screen supplier in the purchase unit right to negotiate, word is weakening. Low prices, the demand has been growing at a slower cycle, the education industry, and users in your overall sales profits is becoming

The education projection system purchase more and more concentrates, causes the projecting camera and the projection screen supplier in discusses with the purchase unit, the words power weakens unceasingly.The price demand is more and more low, returns to the funds cycle slow education profession us

Procurement has become increasingly centralized education projection system, making the projector and projection screen supplier in the negotiation and procurement units, say the weakening. Prices lower demand, back to education users with slow cycle, profit is getting smaller and smaller in overall