The DFA evaluation methods, which are based on the operative difficulty index, has been constructed.
⑵构建了基于操作难度指标的可装配性评价方法模型。
参考来源 - 基于操作难度指标的可装配性评价方法·2,447,543篇论文数据，部分数据来源于NoteExpress
反之操作难度就小一些。
对电力电缆外护套厚度的检验若控制不当，就会增加操作难度和产品成本。
If controlling inappropriate in checkout of power cable outer sheath thickness, then will increase difficulty in operating and production cost.
在如此之长的时间内执行如此广泛的使命，其操作难度对以色列武装力量来说是庞大的。
The technical difficulties for Israel's armed forces of carrying out such a broad mission over such a long time are immense.
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