The thrust system is characterized by backpack expansion.

逆冲系统以背驮式扩展演化。

youdao

For MSCL and MHWH, the setting up of expansion joint and anti-thrust ring will not much affect the stress distributions of SC and surrounding concrete.

无论是对于垫层方案或是保压方案，是否设置伸缩节和止推环对蜗壳应力状态影响均较小。

youdao

When the expansion ratio becomes larger, both thrust and specific impulse will increase.

适当增大扩张比能提高微喷管的性能。

youdao

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FORBES: Innocents Abroad