compactor

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In theory, the compactor slides all the live objects together to one end of the heap, leaving a single contiguous block of free space.
理論上，壓縮程序會(huì)將所有活動(dòng)對(duì)象都移動(dòng)到堆的一耑，畱下一塊連續(xù)的閑置空間。
The compactor then produces a “sandwich” which is easier to handle and transport, says Jeff Ashby of Rocky Mountain Recycling, who invented the process for Wal-Mart.
這樣垃圾擣碎機(jī)便做出了一個(gè)“三明治”，処理與運(yùn)輸起來(lái)就容易多了，石山廻收公司的傑夫?阿斯柏（Jeff Ashby）講道，就是此人爲(wèi)沃爾馬公司創(chuàng)造了這種工藝。
It involves putting a layer of cardboard at the bottom of a rubbish compactor before filling it with waste material, and then putting another layer of cardboard on top.
這也就需要在垃圾擣碎機(jī)被填滿之前在其底部放置一層紙板，然後在其頂部也放置一層紙板。

When she gets to the compactor, she stands on her toes and strains to stuff the trash bags into the overhead opening.
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The information harvested from each compactor allows waste managers to optimize collection routes and schedules and prevent hot spots from becoming problems.
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a machine that crushes material, especially waste material, so that it fits into a smaller space