TTL signal control 信号控制
Through-The-Lens (TTL) mode, on the other hand, puts the flash unit’s output under the control of the camera and flash.
另一方面，TTL模式是由相机和闪光灯决定输出光量的。
The bitelecentric lens, control and compensation of temperature and atmosphere pressure, high resolution imagery and dark field TTL alignment in the system are also described.
物镜具有双远心和有温度气压控制补偿，在满足高精度成像的同时，又能同时满足暗场同轴对准的特点。
The joint control of auto chassis dynamometer system and CFVCVS is accomplished by means of simple and reliable TTL digital logic circuit in the exhaust gas evaluation test.
以简单、可靠的TTL数字逻辑电路实现了汽车底盘测功机系统和尾气采集系统的联机控制。
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