安全关切 security concerns
战略安全关系 strategic security relationship
安全关联 Security Association ; SA ; IKE SA
全开全关 Full ON Full OFF ; FOFO
安全关键 Safety-Critical ; security-critical
安全关联数据库 SADB ; Security Association Database
安全关键系统 safety-critical system ; Safety critical systems
安全关闭 safety shutdown ; SHUTDOWN ; Safety Shut-off
气阀在使用过程中应全开或全关，禁止作调节阀用。
The valve should be completely closed or open; it should not be used as adjusting valve.
从全开到全关只需六分钟。
这些特殊形状的阀芯容许阀门从全开到全关均匀地控制液体流量。
The peculiar shapes of these valve-plugs permit the valve to control the flowing liquid uniformly from fully opened to fully closed.
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