But the telescopes only perform during clear conditions and are limited by weather and atmospheric interferences .

但是光学望远镜只能在清晰视觉条件下工作，所以受气候和大气干扰限制。

But in recent weeks vpns as well have been targeted , with two separate vpn companies telling china real time that they have noticed an uptick in blockages and interferences .

不过，近几周，vpn也成为屏蔽的目标，有两家vpn公司对“中国实时报”栏目说，它们注意到屏蔽和干扰的情况增多。

The combinations of materials that can cause interferences in the determination of a particular element are numerous .

测定某一特定元素时，能引致干扰的材料组合是复杂繁多的。

All spds can not affect the original signals . Spd actions will not cause intolerable interferences to signals .

所有浪涌保护器不能对原信号产生影响，当浪涌保护器动作时，对信号不产生造成不可容忍的干扰。

Because the state of ming and korea both were moribund , there were all sorts of difficulties and interferences in the war including the three respects mentioned above .

由于明与朝鲜皆已腐朽，给抗倭战争带来了包括上述三方面在内的种种困难和干扰。