它的生产周期长,是其复杂的技术。
Its production cycle is long for its complicated technology.
防锈性好,不易发臭,利于环保,使用周期长。
Good antirust property, not easy to stink, environmentally friendly, long use period.
而这些实验的传统方法给教学带来了诸多不便,如设备工作量大、实验周期长等。
However, the traditional ways of these experiments are not convenient for teaching, such as heavy workload and long experiment period.
Cells can stop in their lifetime at some point in the cell cycle and persist for long periods of time.
细胞生命期可以停止在细胞周期的某个点,并保持很长时间
Here is the pitch in--of--a string an octave higher so you can see it this way. As you probably know, if you take a long string and pluck it, it's going to take that long string a long time to pass that sort of cycle, if you will, just one pass through that cycle.
这也是个音高,一个高八度的音弦,你可以这样这样看 你们可能知道,如果你拨动长弦,长弦要经过很长时间,才能完成一个震动周期,如果你想,可以尝试下
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