zero regular NCD ring 零正规NCD
STC Zero Ring UF Filter 零光圈超高解析滤镜
ring without zero divisor 无零因子环
zero divisor ring 零因子环
Zero Angle Ring Light 零角度环型光系列
non-zero divisor ring 非零因子环
With the temperature kept a little below four degrees above absolute zero, the electric current is ever circling a frozen ring of mercury.
由于温度保持在稍低于绝对零度以上四度，电流就沿着低温水银不断地流动。
The limits are valid for bearings before mounting under zero measuring load, and with no axial displacement of one ring relative to the other.
在测量负荷为零、而且一个套圈相对于另一套圈无轴向位移的情况下，这些限值对安装前的轴承有效。
Our result is Theorem 1 Let R be a ring such that zero divisors commute. Then R is nonsingular if and only if R is semiprime.
我们的结果是定理1 设R 是零因子可换环，那末R 是非奇异的当且仅当R 是半素的。
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