一般来说，双套结并不能确保安全万无一失，所以最好是做临时用途。
In general, this knot is not highly secure, so it is best used for temporary situations.
双套结是一个简单又实用的结绳手法，被广泛运用在户外、航海等领域。
This is a fairly simple knot that can be useful for securing ropes to trees, posts, or other things that stand upright.
其中主要的变异有两类，即多卵卵器胚囊(53.3%)和双套结构胚囊(6.3%)。
Of most two kinds of variant embryo sac, referred as poly egg apparatus embryo sac (53.3%) and double set of embryo sac (6.3%) were found.
双套结还可能很滑，即你应该避免让它承受太大重量，或在紧张的时刻解开绳索，这样会很危险。
This knot may also slip, which means you should not use it to support large weights or in situations where the knot coming untied under stress could be dangerous. [3]
结论对经口气管插管患者采用棉织纱带双套结固定效果安全牢固，可有效预防气管导管移位和脱落。
Conclusion Using cotton yarn galloon with double ties to fix the tracheal intubation tube through mouth can achieve the effect of safety and fast, may keep away shift and falling off of air tube.
双护套结构挡潮，提高了光缆抗侧压、抗冲击性能。
Double tidal sheath structure, improve the cable-side pressure, impact resistance.
同时夹具采用双卡套结构，定位管材准确，易于调整错边量。
Dual-keeper structure is applied to guarantee tube positioning accuracy and convenience of adjusting the cross section.
同时夹具采用双卡套结构，定位管材准确，易于调整错边量。
Dual-keeper structure is applied to guarantee tube positioning accuracy and convenience of adjusting the cross section.
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