Optional double steps of pulleys.
可选的滑轮双步骤。
This machine which is the nice machine for your testing department has the function with optional double-edged pressure, adjustable speed, adjustable route and settable number of stop bit.
该机设双头压力可配选、速度可调、行程可调、停止数可设等功能是贵公司测试部门的“良”机。
Single beam, double beam light optional.
单束光、双束光自行可选。
Features double zip-close compartments with leather pull tag and optional lock, zip closure file compartment and detachable ID tag.
特点双拉链拉密切车厢与皮革标签和可选的锁，拉链档案室和可拆卸的ID标签。
Features double zip-close compartments with leather pull tag and optional lock, zip closure file compartment and detachable ID tag.
特点双拉链拉密切车厢与皮革标签和可选的锁，拉链档案室和可拆卸的ID标签。
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