1. In productionrn2. Japan relies on foreign and home-down missiles to meet its air defense needsrn3. Upgrades will maintain the capability of the Type 81rn4. Future air defense systems must be able to engage cruise or ballistic missilesrn5. Follow-on to the Type 81 could arrive within the next 10 years.
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机译：1.在生产中2。日本依靠外国和本国导弹来满足其防空需求3。升级将保持81rn4型的能力。未来的防空系统必须能够使用巡航导弹或弹道导弹。 Type 81的后续产品可能会在未来10年内到货。
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