synchronized timing meaning in English

同步成圈

Presently , the apon system adopts tdma as the access mode on the uplink . it requires not too much in terms of optical performance , but it requires more complex electronic equipment ( e . g . , complex synchronized timing , ranging and delay control technolgies ) to avoid the collision of uplink information packets
目前apon系统在上行信道中采用时分多址的接入方式，它对光性能方面的要求不高，但它要求更复杂的电子设备，如要求复杂的同步定时、测距和延时控制技术，以避免上行信息分组产生碰撞。
Focusing on the time constraint problem in protocol testing theories , a strict constraint over time parameters in protocol testing was presented from several conformance testing methods , and a test case generation algorithm was given under the strict time constraint based on waiting , coordination and synchronizing time
摘要针对协议测试理论中的时间约束问题，从不同的一致性测试方法出发对协议测试中的时间参数做了严格的约束，同时给出了基于等待、协调和同步时间的严格约束下的测试用例生成算法。