这使得一个三刃刀的宽度为四槽宽。
This makes a total width of four slots for a single TriBlade.
比较大的构造是索尔顿海槽，它是从加利福尼亚湾延伸出的一片洼地，穿过现代的科罗拉多河三角洲，向西北进入加利福尼亚，直达索尔顿海。
The larger structure is the Salton Trough, a depression that stretches from the Gulf of California, through the modern Colorado River Delta, and northwestward into California as far as the Salton Sea.
他说，假如你用这样的采金锅需要三到四天，但是如果你有便携式的洗矿槽，淘洗同样数量的矿砂只要一天就够了。
Three to four days if you stuck with a pan, he reckoned, but with a portable sluice box you could process the same amount of gravel and material in a single day.
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