The early system were known as open systems, because the oil-filler cap was open, or vented to the atmosphere . 早期的控制系统，就是人们所知道的“开式”系统，因为它的加机油管盖是开式的，或者说因其与大气连通。
开: open; turn on; switch on; be ...式: type; style的: 4次方是 The fourth power of 2 i ...半开式的: semi-opened敞开式的: open; unenclosed前开式的: open fronted双开式的弹簧门: swing door开式: open-formula式的: complex; hepburnian hepburn半开式: semi-open type常开式: normally open type敞开式: discover; open type短开式: short sign-on对开式: bi-parting风开式: normally closed和开式: p.p开式船: open ship; open type ship; open vessel; openship开式链: open kinematic chain开式炉: open hearth开式模: open die开式艉: open stern快开式: quick-open type内开式: swing-in平开式: side hung气开式: air to open; air-to-open; gas force open type
