For smaller and simpler trees, using XML: : simple is generally cheaper in terms of engineering costs.

对于小的、简单的树，从工程代价上来说使用XML： Simple通常更低廉。

youdao

All equipment and materials used can be produced domestically and therefore the engineering costs involved are low.

全部设备和材料均可在国内生产制造，工程费用比较低。

youdao

He said that an unpredictable flow, which is common in mixed signal designs, can result in an 80% increase in engineering costs-and it gets worse.

他说在混合信号设计中很常见的不可预见信号流会导致工程成本增加80%——而且还会更糟。

youdao

Yet it's not as profitable as it could be, mostly because engineering costs remain too high.

FORBES: Needed: Butt Kicker

This saves plant engineering costs and helps each new plant learn from the mistakes of the plant before it.

FORBES: Companies, People, Ideas

Airbus officials have said they might fit 7E7 engines on the A330, cutting the operating advantage, though questions have arisen over related engineering costs.

CNN: Airlines warming to Boeing 7E7 jet