Along with its main rival, the Boeing 737, such single-aisle planes are the workhorses of worldwide aviation, accounting for four out of five commercial jets sold.
与它的主要竞争对手波音737一样属于单过道客机，该机型是全球航空业的骨干主力，占据了世界五分之四的商用喷气客机销售份额。
And the Predator's ability to stay aloft for a whole day helped to overcome the main shortcoming of satellites and jets: they can only glimpse a target, rather than watch it over time.
“掠夺者”飞机能够在高空飞行长达一整天的时间，这也有助于克服卫星与喷气式飞机的主要缺点，即它们只能短暂地瞥见目标，却不能长久地对其进行观察。
Most ships have an arrangement of fire main and hydrant valves whereby at least two jets of water may be directed on a fire in any part of the ship.
大多数船只安排火灾主要消防栓阀门，至少有两个喷气机的水将会在火中任何其他地方的船。
But the two main makers of full-sized commercial jets can look forward to years of guaranteed business, with firm orders at a record (see chart).
但是在此基础上这两大拥有全尺寸商用喷气式飞机的主要飞机制造商仍可以在数年内通过持续翻新的订单数保障业务量处于稳固高位(见下表)。
And the Predator 's ability to stay aloft for a whole day helped to overcome the main shortcoming of satellites and jets: they can only glimpse a target, rather than watch it over time.
“掠夺者”飞机能够在高空飞行长达一整天的时间，这也有助于克服卫星与喷气式飞机的主要缺点，即它们只能短暂地瞥见目标，却不能长久地对其进行观察。
A single progressive metering groove did away with both main and corrector jets, as well the Venturi.
一个单一的渐进式计量槽，摆脱双方的主要和校正飞机，以及文丘里。
A single progressive metering groove did away with both main and corrector jets, as well the Venturi.
一个单一的渐进式计量槽，摆脱双方的主要和校正飞机，以及文丘里。
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